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DSQS
DAEWOO
SHIPBUILDING
QUALITY
STANDARD
2016
DOC. NO. : DSE-QS-01
REV. NO. : 17
DSQS
DAEWOO
SHIPBUILDING
QUALITY
STANDARD
★ This document
the property of
DSME, and must not be partially or wholly
copied or used for any other purpose
without prior written permission of DSME.
is
★ 이 문서는 당사의 자산이므로
허락없이 사외 유출을 금합니다.
Published in 2016
2016
PREFACE
The shipbuilding construction process
involves assembling
numerous hull block, machinery, equipment, other outfitted items
and subsequent testing. The quality of a ship is determined by
the accurate and controlled construction, assembly and
installation of
the various
items
to a defined acceptable
standard.
Workmanship quality is very important, and the only way to attain
the required quality and productivity improvements is to ensure
the desired quality at each stage of production. This is achieved
by each worker following the defined quality standard.
This quality standard consists of 4 parts as following;
Part Ⅰ. General procedure
Part Ⅱ. Hull part
Part Ⅲ. Outfitting & Machinery part
Part Ⅳ. Painting part
The standards stipulated in this quality standard are generally
applied to shipbuilding at the shipyard. In case of conflict, however, the
requirements of the contract, building specifications, approved drawings
or agreed letters/memorandum shall prevail over this DSQS.
October, 2016
Quality Management Division
[ DSME’s Quality Philosophy ]
As the world’s leading shipyard, we willingly create the highest
value and share deep trust with our customers.
PART I. GENERAL PROCEDURE
◇ CO N TE N TS ◇
Ⅰ. GENERAL PROCEDURE FOR INSPECTION/TEST
1. Mandatory Inspection and Test
2. Request for Inspection/Test
3. Cancellation, Postponement and Non-attendance
4. Inspection & Test Record
5. Repair Work
6. Other Quality Standard
Page
3
3
4
4
4
5
Ⅰ. GENERAL PROCEDURE FOR INSPECTION/TEST
3
(DSME_DSQS_2016)
1. Mandatory Inspection and Test
(1) The inspection and test items listed herein are the fundamental inspection
/witness points of the Client and the Classification Societies based on the
Classification Society's rules.
(2) For those inspections and tests which are not listed, however, the Client's
representative and the Classification surveyor can have a free access to
inspect all works during process unless additional staging or work stop is
required.
(3) In principle, inspection and test are to be carried out in accordance with the
Builder's working schedule. For smooth construction of the vessel, the
inspection parties shall not refuse to inspect the parts designated by the
Builder even if some minor works remain which can be completed and
subjected to inspection at later stage.
2. Request for Inspection/Test
(1) The Builder shall request the attendance of the Client's representative and the
Classification surveyor for the relevant inspections/tests by means of e-QISS
computerized system.
(2) The request of inspections/tests for owner/class is to be noticed
as followings;
For the inspection to be carried out from Tuesday to Saturday, the request
will be given not later than 16:30 the day before.
For the inspection to be carried out on Sunday, the request will be given
not later than 16:30 on Friday.
For the inspection to be carried out on Monday, the request will be given
not later than 12:00 on Saturday.
(3) For some reason, if the daily inspection schedule is changed or delayed, the
Builder shall notify the situation to the Client and the Classification office as soon
as possible.
(4) In the event of urgent inspection, the Builder shall notify and discuss with the
Client's representative and the Classification Society.
Ⅰ. GENERAL PROCEDURE FOR INSPECTION/TEST
4
(DSME_DSQS_2016)
3. Inspection Cancellation, Postponement, Non-attendance
(1) For any reason, if the inspection schedule is cancelled or postponed, the
concerned parties are to be informed as soon as possible.
(2) If either the Client's representative or Classification surveyor fails to attend the
inspection, it is to be deemed to waive his right and he shall accept the results
of inspection performed by attended surveyor and/or Builder's Q.M inspector.
(3) If either the Client's representative or Classification surveyor fails to attend the
inspection applied on holidays, he(she) shall accept the results of inspection
carried out by attending surveyor and/or Builder's Q.M inspector.
4. Inspection/Test Record
(1) The Builder shall submit the "Inspection and Test Record" forms containing the
necessary information for the inspection items to the Client's representative
and the Classification surveyor.
(2) After completion of inspections/tests, the Client's representative and/or the
Classification surveyor shall make confirmation signature on the inspection
/test record, with the comments if any, and return to Builder's Q.M inspector.
(3) Inspection results shall be clearly judged as follows;
(a) AA
(b) AC
(c) RC
(d) NA
(e) CXL
(f) PP
: Accepted in the existing condition.
: Accepted with comments to be confirmed by Builder's QM.
: Required re-inspection for the comments to be confirmed by
Client and/or Class.
: Not accepted, and subjected to re-inspection
: Cancelled due to faults of the group requesting inspection.
: Cancelled due to inevitable reasons.
(4) The major inspection and test records including the on-board test results
are to be submitted to the Client's representative and the Classification
surveyor at the ship's delivery stage by means of CD.
5. Repair Work
(1) Repair work shall be basically carried out in accordance with builder's
working practices and the rules of Classification Societies.
Ⅰ. GENERAL PROCEDURE FOR INSPECTION/TEST
5
(DSME_DSQS_2016)
(2) When re-inspection is required, it will normally be included in the
"Daily Inspection Schedule" and shall follow the procedure described in the
preceding paragraphs.
6. Other Quality Standard
(1) In general, other quality standard except various quality standard
described in this standard are applied to DSME's technical standards, and
they are maintained in accordance with DSME's standard control system.
(2) For the technical field of DSME, the technical standards applied to the
material, component, design, inspection are classified as follows.
(a) Regulation
Document defining a standard for a specific character, efficiency, dimension
required on the producing product, part product, raw material and purchasing
product and a term, abbreviations, symbol, units, system related to the
technical fields.
(b) Procedure
Document defining the efficient and effective means, methods and sequence
on the design, working, inspection, testing, purchasing and equipment of
the engineering and manufacturing.
(c) Job instruction
Document describing a diagram, symbol and sentence after standardizing
the job sequence, job method, standard time and job caution item for all of
works performing in each working group.
※ REMARKS
(1) Marks of O, C and R in the list of inspection/test items mean as follows;
O : Items to be witnessed by the Client's representative.
C : Items to be witnessed by the Classification surveyor.
R : Items to be required test records and/or Classification certificate,
which are to be submitted to the Client's representative.
(2) Detail testing to be carried out separately for each system is to be specified
in the procedure such as "On-board Test Procedure" and "Mooring/Sea
Trial Procedure/Gas Trial Procedure".
(3) The inspections of the Regulatory body or Government body specified in the
contract or specifications are to be scheduled separately.
PART Ⅱ. HULL PART
◇ CO N TE N TS ◇
Ⅰ. MAJOR PROCESSES
1. Cutting/Forming Process
2. Assembly Process
3. Erection Process
4. Welding Process
Ⅱ. CATEGORIES OF INSPECTION
AND TEST ITEMS
1. Hull structure part
Ⅲ. QUALITY STANDARDS
1. Material
2. Gas cutting
3. Fabrication
4. Assembly
5. Alignment and finishing
6. Unfairness
7. Surface finish condition
8. Insert
9. Welding/Weld condition
10. Grinding
11. Accuracy of hull form
12. Miscellaneous
Page
7
9
11
13
15
16
18
19
21
22
31
32
62
64
68
70
72
Ⅰ. MAJOR PROCESSES
1. CUTTING/FORMING PROCESS
1.1 Control of Steel Materials
(DSME_DSQS_2016)
7
(1) When steel materials are transferred to shot blasting/priming process from
steel stock area, the designated steel materials should be correctly selected
and supplied by comparing the identification numbers of the steel materials
with the “Steel Material Input Order Sheet”.
(2) Input sequences of steel materials to the shot blasting/priming process are
controlled by computerized system for correct trace of the materials.
(3) After blasting/priming, the necessary information such as project no., block no.,
grade, and applied cutting station no., are marked down on the primed steel
materials to identify the material.
(4) At the cutting stage, the part numbers of each cut steel pieces are clearly
marked according to the cutting drawing.
(5) Accuracy control of steel pieces should be maintained continuously throughout
the cutting process to minimize welding gaps.
(6) Following items are to be checked in this process.
Stage
Blasting
/Priming
Marking
Gas cutting
Check point
Remarks
a. Thickness and grade of plates, bars
and shaped angles, etc.
b. Surface defects such as pitting or flaking
a. Precision of mould line
b. Drawing information
c. Color marking for steel grade
① Manual marking
- Mild steel : White
- “E” and “EH” grade steel : Green
- High tensile steel : Yellow
- Low temp. steel ( L to LHSA ) : Red
② Auto-marking : Black
a. Condition of cutting surface
- Slag removal
- Notch
b. Dimensions after cutting
c. Primer touch-up condition
Ⅰ. MAJOR PROCESSES
1.2 Forming
(1) Mechanical Bending
(DSME_DSQS_2016)
8
The plate having cylindrical shapes is generally formed by a hydraulic press
using the universal jigs with templet tables. Most templets are produced by a
computerized system except for manual drawings of fore and stern parts.
(2) Hot Bending
The plate having compound curves is firstly formed by the mechanical
bending and finally formed by hot bending with the line-heating or spot
heating.
The applied temperature in hot bending is controlled by means of temperature
sensitive chalk(Tempil-stick) according to following table.
Steel Type
Cooling Method
Standard Range (oC)
High tensile
50Kg/mm2 grade
TMCP type 50 HT
(Ceq. > 0.38%)
TMCP type 50HT
(Ceq. ≤ 0.38%)
- AH to DH
TMCP type 50HT
(Ceq. ≤ 0.38%)
- EH Grade
Low temp. steel
- L to LHSA
Water cooling
Air cooling
Air cooling
Water cooling
(after air cooling)
Water cooling
or air-cooling
Water cooling
or air-cooling
Air cooling
Water cooling
(after air cooling)
≤ 650
≤ 900
≤ 900
Starting temperature of
water cooling : ≤ 500
≤ 1000
≤ 900
≤ 900
Starting temperature of
water cooling : ≤ 550
※ Ceq. is obtained from Mill certificates.
(3) Major Check Points
a. Heating temperature
b. Accuracy of bending
Ⅰ. MAJOR PROCESSES
2. ASSEMBLY PROCESS
2.1 Sub-assembly
(DSME_DSQS_2016)
9
(1) For good access to block assembly work, structures having some size such
as floor, bulkhead, deck, side shell and large brackets, etc., are built up
prior to block assembly.
(2) After completion of sub-assembly work, the sub-assembly is to be inspected by
builder’s inspector.
Then, necessary leakage tests on the fillet welds where water tightness is
required should be carried out by means of fillet air test, vacuum test or other
proper methods.
2.2 Assembly
(1) Block assembly is a process of assembly / welding together with sub-assembled
block and independent material pieces on the platform or jig, and automatic or
semi-automatic welding is applicable alternatively according to shape of
welding parts such as flat plate, curved plate, etc..
(2) The complicated blocks such as fore or aft parts of hull should be assembled
with great care to acquire the acceptable accuracy of dimensions.
(3) After completion of the assembly work, the block is inspected in the presence
of Classification surveyor and Client's representative. Then, necessary leakage
tests on the fillet weld parts where watertight is required should be carried
out by means of fillet air test, vacuum test or other methods which are
proved the tightness of welded part.
(4) The inspection of blocks by Client’s representative and Classification
Society’s surveyor shall be waived and carried out by the Builder’s staff under
the supervision of Builder’s QM and Classification Society in the process of
block fabrication provide that the blocks are being fabricated in a workshop or
by a production team that has been proven its ability to maintain acceptable
quality level through self-quality control by periodical evaluations of Builder’s
QM and Classification Society.
Ⅰ. MAJOR PROCESSES
2.3 Major Check Points at Assembly Process
a. Shape of cutting surface
b. Accuracy of dimensions for a single part
c. Precision of 100 mark for fitting
(DSME_DSQS_2016)
10
d. Position alignment of parts to the principle line/right angle
e. Position of scallops or butt lines in way of bracket toe
f. Collars or carlings as per drawing
g. Position and size of lightening holes, drain holes, air holes, etc
h. Any damages caused by cutting
i. Amount, direction of cutting allowance
j. Removing unnecessary pieces
k. Lapped-length of lap joint
l. Radius in way of squared hole
m. Precision of center line, water line, buttock line and/or control line
n. Welding condition (refer to para. 4. "Welding process")
o. Basic dimension as final
2.4 Fillet Air Test
After completion of welding, compressed air is injected to the fillet/p.p weld
joints through the plug piece, and inside air pressure should be checked with
pressure gauge as shown on the following figure.
Leakage can be detected by spraying a soapy water solution on the weld
joints.
Ⅰ. MAJOR PROCESSES
3. ERECTION PROCESS
3.1 Pre-erection / Erection
(DSME_DSQS_2016)
11
(1) Pre-erection / Erection is a process of erection and welding the unit blocks at
the dock side or in the building dock with regular checks of the hull dimensions.
(2) After completion of pre-erection/erection work, final inspection is carried out
by Classification surveyor and Client's representative.
Then, necessary leakage tests on the fillet weld parts where watertight is
required are carried out by means of fillet air test, vacuum test or other
methods which are proved the tightness of welded part.
(3) Welded joints of deck plates, bottom and side shell plates are subjected to
NDE(Non-Destructive Examination) with radiographic test or ultrasonic flaw
detector, etc. in accordance with NDE plan which is approved by the
Classification Society.
(4) At pre-erection/erection stage, followings are to be carefully checked.
Check Point
Remarks
Wooden blocks are
to be arranged to bear
local compression.
a. Height and inclination of wooden block and
its position
b. Amount of cocking-down
c. Center line and water line of each block
d. Reference line and/or distance between adjacent
frames in way of block joint
e. Arrangement of temporary pieces such as
strong-backs
f. Alignment of structural members
g. Any structural inconsistency
h. Center line of stern boss / gudgeon at stern block
i. welding condition (refer to para. 4. "Welding process")
j. Other necessary items
3.2 Tank Testing
(1) All structural tanks are to be tested by the air test or the hydrostatic test. The
hydrostatic tests are to be carried out for the specified tanks to confirm the
structural strength in accordance with the "Tank Testing Plan" which is
approved by the Classification Society.
(2) The hydrostatic test need not be repeated for the succeeding sister vessels of
the same series.
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
12
(3) Before tank testing, the penetration pieces/piping concerned to the tests are
to be completed as far as possible.
(4) Check points during tank test are as follows.
kind of test
Check point
Remarks
Air test
(Leakage test)
a. Internal pressure
b. Leakage
Hyd. test
(Strength test)
a. Height of water head
b. Leakage(except the
complete parts at air test)
c. Deformation of bulkhead.
- Attention to be paid to
air pocket or air discharge
route during filling water
3.3 Scaffolding Pieces and Lifting Lugs
3.3.1 Scaffolding Pieces
(1) Scaffolding pieces shall not be removed in the position where they do not
interfere with the function of the ship. However, those in the following location
are to be removed.
a. Exposed parts of ship where they are likely to spoil the appearance
b. Scaffolding pieces installed under 2.0m height above passage(Main
passage and equipment operation area)
※ Details are referred to in the quality standards, para. 7.2 "Disposal of lifting
lug and scaffolding piece".
3.3.2 Lifting lugs
(1) Lifting lugs shall not be removed in the position where they do not interfere
with the function of the ship. However, those in the following location are to
be removed.
a. Exposed parts of ship where they are likely to spoil the appearance
b. Passages where they may cause danger for ship’s crew
c. Other parts designated by design as high stress area
※ Details are referred to in the quality standards, para. 7.3 "Disposal of lifting
lug and scaffolding piece ".
3.4 Temporary Access Opening
(1) When the temporary access openings are required on the shell plates, decks,
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
13
bulkheads and tank top of double bottom for passages of hull and outfitting
work, and for ventilation, they are to be provided according to Builder's
Practice.
(2) The shape of the openings and the method of closing are referred to in the
quality standards, para. 8 - "Insert".
4. WELDING PROCESS
4.1 General
(1) Since welding is an important work directly related to hull strength, it should
be carefully controlled according to the welding procedure with the specified
welding parameters and the repair methods for welding gaps exceeding the
tolerance limit should be thoroughly controlled.
(2) When a new welding procedure is necessarily applied, it shall be approved
by the Classification Society.
4.2 Preparation before Welding
(1) All parts to be welded are fitted with sufficient care to their accuracy.
Edge-preparation, angle of bevel, alignment of intercostals plates and fitting
angles are controlled within the accuracy range specified in the quality
standard.
(2) Welding parts shall be free from moisture, loose mill scale, excessive rust or
harmful paint.
(3) Tack welding is carried out under the same preparation of welding.
4.3 Welding
(1) After confirming the above preparation, welding is carried out according to
the "Welding Procedure Specification" to minimize deformation and residual
stress.
(2) Electrodes, welding method, welding condition shall be in accordance with
"Welding Procedure Specification" and requirements of the Classification
Society.
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
14
(3) After completion of welding, if necessary, the weld lines are touched up with
a zinc epoxy primer to prevent rusting.
4.4 Inspection on Weld Parts
Following inspections are carried out to verify the quality of weld parts.
(1) Visual inspection
(a) Visual inspection is carried out on all beads. Any defect parts found are
marked on the block and properly corrected.
(b) The welding throat of fillet weld is to be checked by random sampling.
(2) Non-destructive examination
(a) Welded joints of strength deck plates, bottom and side shell plates are
tested by the radiographic examination or ultrasonic flaw detector
according to NDE plan which is approved by the Classification Society.
(b) Magnetic particle test or dye-penetration test is to be adopted for
detecting the surface defect.
4.5 Major Check Points
a. Dimension and shape of edge preparation
b. Alignment of welding parts
c. Tab piece
d. Arrangement against deformation such as strong-back
e. Amount of pre-heating if specified
f. Fitness of electrode and consumable used
g. Welder's qualification
h. Gap before welding
i. Weld throat in fillet weld / Leg length in P.P, D.P, F.P weld
j. Uniformity of beads, intervals in intermittent welding
k. Surface defects on weld such as crack, undercut, crater, etc.
l. Slag, porosity inclusion
m. Soundness of turn-round weld on such part as bracket toe
n. Position of water-stop hole
o. Other necessary items
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
15
(DSME_DSQS_2016)
1. Hull structure part
C O R
Remarks
1.1 Fillet air test for sub assembly and
unit assembly
1.2 Sub assembly and unit assembly
inspection
O To be tested by QM
O To be inspected by QM
The blocks that comply with
the condition of DSQS
Part II, I, 2.2.(4) shall
be excepted.
1.3 Block inspection for hull structure
O O
below main deck
1.4 Block inspection for hull structure
above main deck
1.5 Erection inspection for pre-erected
lines or tank space below main deck
including accommodation
1.6 Erection inspection for erection lines
or tank space below main deck
1.7 Erection inspection for erection lines
or space above main deck
1.8 Tank hydrostatic test according to
"tank testing plan"
1.9 Air leakage test or vacuum test for
weld joint at tight boundary of tanks
O
O O
O O
O
O O
O O
1.10 Non-destructive examination according
to the Classification Society's rule
O
O NDE plan is made to show
kinds and locations of NDE
items with Classification
Society's approval.
1.11 L x B x D measurement at ship
center and midship
O O O
1.12 Draft mark inspection
1.13 Free-board mark inspection
1.14 In-water survey mark(for the applied
ship) inspection
O O
O
O
1.15 Bottom survey for launching
O O
Check at the marked
condition.
Check at the marked
condition.
Check the closing of sea
chest, bottom plug, etc.
1.16 Inclining experiment and deadweight
measurement
O O O
Ⅲ. QUALITY STANDARDS
1. MATERIAL
1.1 Surface flaw
(DSME_DSQS_2016)
16
( Unit : mm )
D e t a i l
Correction / Remarks
Pitting
Grade of pitting
Area Ratio(%) ;
Area of pitting
x 100
Total area of steel surface
Flaking
Grade of surface flaking
Area Ratio(%) ;
Area of flaking
x 100
Total area of steel surface
1. Grade A : Repair is not required.
2. Grade B :
a) Outer surface of shell plates :
To be repaired by painting with epoxy
(When painting with epoxy can not be
done, grinding is to be carried out)
b) Others : Repair is not required.
3. Grade C : Repair is required.
a) Outer surface of shell plates :
To be repaired by grinding.
b) Others : Painting with epoxy is to be
carried out.
4. Grade D : Repair method shall be
determined after discussion with owner
and Classification Society.
※ Recommended repair method :
Grinding followed by repair welding.
1. Grade A : Repair is not required.
2. Grade B : To be repaired.
3. Grade C : To be repaired.
※ Repair method ( d = depth of defects)
a) d≤0.07t(max. 3mm) : Grinding.
b) 0.07t ＜ d≤0.2t : Welding and grinding.
(The welded area should be less than
2% of the total area of a plate)
(Max. 3)0.07t0.80.50.30.15
Depth255075100Area ratio%mm
ACDBB
CBA25120.50.81.0%mm
Area ratio0.1
CBA2512Depth
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
17
1.2 Casting
( Unit : mm )
D e t a i l
Correction / Remarks
Defect of cast steel
In case where defect is over 20%
of thickness, or over 25mm of
depth and 150mm of length.
In case that cavity, crack and other
injurious defect are found, after
removal of the defects, it is to be
checked by dye penetration inspection,
magnetic particle inspection, or
ultrasonic test and to be repaired by
adequate method.
with the Classification surveyor.
* The extent of repair is to be agreed upon
1.3 Lamination
Local lamination
1. In case that the range of lamination
is limited, it can be chipped out and
built-up by welding as shown in (A).
NDE is to be done after repair.
(A)
(B)
2. In case that the range of lamination is
limited and near the plate surface, it
is preferable to make the built-up welding
as shown in (B).
NDE is to be done after repair.
※ The extent of repairs is to be agreed
upon with the Classification surveyor
from case by case.
Ⅲ. QUALITY STANDARDS
2. GAS CUTTING
2.1 Notch
(DSME_DSQS_2016)
18
( Unit : mm )
Section
Detail
Tolerance Limit
Free edge
Primary Member
Indentation≤1.0
Others
Indentation≤3.0
Primary Member
Indentation≤2.0
Weld groove
Others
Indentation≤3.0
For fillet welding
Indentation≤3.0
- Notch is to be repaired by grinding or welding.
- Short bead is to be avoided.
- Notch on free edge of primary member is to be smoothly ground.
2.2 Dimension
( Unit : mm )
D e t a i l
Standard Range
Tolerance Limit
Length of taper
ℓ= 3d±0.5d
ℓ= 3d±1.0d
d ℓ
Ⅲ. QUALITY STANDARDS
3. FABRICATION
3.1 Flange, longitudinal & flanged bracket
(DSME_DSQS_2016)
19
( Unit : mm )
D e t a i l
Standard Range
Tolerance Limit
Breadth of flange
a : ±3.0
b : ±3.0
a : ±5.0
b : ±5.0
Angle between flange and web
Angle deflection of built up
δ
δ : ±3.0
per 100mm
δ : ±5.0
per 100mm
3.2 Plating ( Unit : mm )
For cylindrical
structure
(mast, post,
etc.)
Diameter
D
D: ±
200
But, max. ＋5.0
D
D: ±
150
But, max. 7.5
3.3 Size of built-up section (girder, stiffener) ( Unit : mm )
a
b
a = 3 +
100
b = design breadth ±5
d = design depth ±5
a ≤3 + b/100 mm
a ≤5 + b/100 mm
ab
100δ
D
bda
bd
bd
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
20
3.4 Distortion of girder, stiffener, pillar, cross-tie, etc.
( Unit : mm )
D e t a i l
Standard Range
Tolerance Limit
- Girder at flange and upper edge
of web.
- Cross-tie
h≤10 / 10m
1.5ℓ
a≤ (Max.10mm)
1000
(ℓ= length of span)
h≤25 / 10m
2.0ℓ
a≤ (Max.25mm)
1000
(ℓ= length of span)
Stiffener (longitudinal, frame,
Bulkhead)
H-pillar (between decks)
ℓ≤1000, a≤5
1000＜ℓ＜3500,
a≤3+2ℓ/1000
ℓ≥3500, a≤10
(ℓ= length of span)
ℓ≤1000, a≤8
1000＜ℓ＜3500,
a≤6+2ℓ/1000
ℓ≥3500, a≤13
(ℓ= length of span)
a≤4
a≤6
Tripping bracket and small stiffener
a
t
t
a ≤
2
a≤t
Distortion at the part of free edge
ha
aa
a
Ⅲ. QUALITY STANDARDS
4. ASSEMBLY
4.1 Special sub-assembly
(DSME_DSQS_2016)
21
( Unit : mm )
Block
ass'y
with
stern
frame
Distance between aft edge of
boss and aft peak bulkhead
b :±5 b :±10
Twist of assembly
c : 5
c : 10
Deviation of rudder from shaft
center line
d : 4 d : 8
Rudder Twist of rudder plate
6
10
C : Twist of plane
including center line
Correct or re-assemble
partially
Main
engine
bed
Flatness of top plate of main
engine bed
5
10
Breadth and length of top
plate of main engine bed
±4
±6
4.2 Temperature for line heating
Steel type
Cooling method
Standard range
High tensile 50Kg/mm² grade
TMCP type 50 HT (Ceq.＞0.38%)
Water cooling
Air cooling
Air cooling,
≤ 650 oC
≤ 900 oC
≤ 900 oC
Water cooling
Starting water cooling
(after air cooling)
≤ 500 oC
TMCP type 50 HT (Ceq.≤0.38%)
- AH to DH grade
TMCP type 50 HT (Ceq.≤0.38%)
- EH grade
※ Ceq. is obtained from Mill certificates.
Water cooling
or
air cooling
Water cooling
or
air cooling
≤ 1000 oC
≤ 900 oC
Ⅲ. QUALITY STANDARDS
5. ALIGNMENT AND FINISHING
5.1 Fitting accuracy of longitudinal
(DSME_DSQS_2016)
22
( Unit : mm )
D e t a i l
Tolerance Limit
Corrections
Web in T-, L- and
flat bar longitudinal
Breadth of flange in
T-longitudinal
Flange
(The height of
web varies)
Main primary
member
a≤0.15 t1
(max. 3mm)
Secondary
member
a≤0.2 t1
(max.3.0mm)
When a＞0.15t1(Primary member)
and a＞0.2t1(Secondary member),
or a＞3.0
additional welding smoothly or
release and adjust the plate.
The plate is to be released min. 30 x a.
a≤0.04b
(max. 8mm)
When 0.04b＜a≤0.08b, grind
corners to smooth taper over
distance min. 30 x a.
when a＞0.08b,
release and adjust the plate.
The plate is to be released min. 50 x a.
Main primary
member
a≤0.2 t1
(max. 4mm)
Secondary
member
a≤0.3 t1
(max. 4mm)
When a＞0.2t1(Primary member)
and a＞0.3t1(Secondary member),
additional welding smoothly or
release and adjust the plate.
The plate is to be released min. 20 x a.
5.2 Misalignment of butt joint ( Unit : mm )
Main primary
member
a≤0.15 t1
(max. 4mm)
Secondary
member
a≤0.2 t1
(max. 4mm)
When a＞0.15t1(Primary member)/
a＞0.2t1(Secondary member), or a＞4mm
additional welding smoothly or
release and adjust the plate.
t1t2t1 ≤ t2a
ab
t2t1t1 ≤ t2a
t1 ≤ t2t2at1
Ⅲ. QUALITY STANDARDS
5.3 Fitting of corrugated bulkhead
(DSME_DSQS_2016)
23
( Unit : mm )
D e t a i l
Tolerance Limit
Corrections
Strength member
and higher stress
member
a≤t1/3
Others
a≤t1/2
Where t3 is less
than t1, then t3
should be
substituted for t1
in the standard.
5.4 Fitting of cruciform joint
Strength member and higher
stress member:
t1/3<a≤t1/2 – generally increase weld
throat by 10%
a>t1/2 – release and adjust over a
minimum of 50a
Other:
a>t1/2 – release and adjust over a
minimum of 30a
( Unit : mm )
Longi. members
within 0.6L and
principal transverse
supporting members
a≤t1/3
When t1/3＜a≤t1/2, weld throat
shall be increased by 10%.
When a＞t1/2, release over
distance of Min. 50 x a, and
adjust the members.
Others
a≤t1/2
When a＞t1/2, release over
distance of Min. 30 x a, and
adjust the members.
5.5 Gap for overlap joint
( Unit : mm )
2t1 + 15
(max. 50)
(t1 ≤ t2)
Weld throat(a)
a≤4
s≤2
a＞4
s≤3
When 3＜s≤5,
the weld throat is to be increased
as much as the increase of gap
opening exceeding 3mm.
When s＞5,
release and adjust.
t2t1at1 ≤ t2
t1t2S
Ⅲ. QUALITY STANDARDS
5.6 Gap for bracket
(DSME_DSQS_2016)
24
( Unit : mm )
D e t a i l
Tolerance Limit
Corrections
Weld throat(a)
a≤4
s≤2
a＞4
s≤5
When 3＜s≤5,
the weld throat is to be increased
as much as the increase of gap
opening exceeding 3mm.
When s＞5,
release and adjust..
5.7 Gap for fillet joint ( Unit : mm )
Weld throat ＜4,
s≤2
Weld throat ≥4,
s≤3
1. When 3＜s≤5, the weld throat
is to be increased as much as
the increase of gap opening
exceeding 3mm.
2. When 5＜s≤16 (max. 1.5t),
chamfer 30o∼45o and build up
by welding with/without ceramic
backing or flat bar.
3. When 16＜s or s＞1.5t,
new plate is to be inserted
min. 300mm wide or repair
in accordance with the agreed
procedure.
Fillet
SBracket
tS
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
25
( 5.7 Gap for fillet joint )
( Unit : mm )
D e t a i l
Tolerance Limit
Corrections
s≤3
s≤3
1. When 3＜s≤16 (max. 1.5t),
build up by welding with/without
ceramic backing or flat bar.
2. After welding, remove flat bar/
ceramic backing and complete
back side welding.
3. When 16＜s or s＞1.5t,
new plate is to be inserted
min. 300mm wide or repair
in accordance with the agreed
procedure.
Single V groove
Double bevel groove
tS
St
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
26
5.8 Gap for bracket, frame, beam, stiffener, etc.
( Unit : mm )
D e t a i l
Tolerance Limit
Corrections
1. When 3＜s≤5, the weld
throat is to be increased as
much as the increase of gap
opening exceeding 3mm.
2. When 5＜s≤16(Max. 1.5t),
bevel 30o∼45o and build up
by welding.
3. When s＞16(Max. 1.5t),
fit the collar plate after cutting
of nib up to 50mm gap.
s≤3
5.9 Gap for butt joint (for FCAW, GMAW) ( Unit : mm )
D e t a i l
Standard Range
Corrections
Horizontal position
θ= 30∼45o
f = 0∼2
s = 3∼8
1. When 8＜s≤25 (Max. 1.5t)
2. When s＞25 or s＞1.5t,
new plate is to be
inserted with min. 300mm
wide or repair in
accordance with the
agreed procedure.
S
ℓ= min. 50
tℓ50
θSf
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
27
(5.9 Gap for butt joint (for FCAW, GMAW)) ( Unit : mm )
D e t a i l
Standard Range
Corrections
■ For general
θ= 30~50o
f = 0∼2
s = 3~12
1. When 12＜s≤16
2. When 16＜s≤25 (Max. 1.5t)
3. When s＞25 or s＞1.5t,
new plate is to be inserted
with min. 300mm wide or
repair in accordance with
the agreed procedure.
■ For low temp.
steel (L to LHSA)
θ= 35~65o
f = 0∼2
s = 2~6
1. When 6＜s≤12
2. When 12＜s≤16 (Max. 1.5t)
3. When s＞16 or s＞1.5t,
new plate is to be inserted
with min. 300mm wide or
repair in accordance with
the agreed procedure.
Flat / vertical position
θSf
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
28
5.10 Gap for butt joint (for E.G.W)
( Unit : mm )
D e t a i l
Standard Range
Vertical position
t
θ
f
s
11≤t≤25
25＜t≤50
20∼40o
0∼2
6∼14
20~30o(25＜t≤40)
18~25o(40＜t≤50)
0∼2
6∼14
5.11 Gap for butt joint (for S.A.W) ( Unit : mm )
D e t a i l
Standard Range
Corrections
Flat position
1. When 0.8＜s≤ 5,
: Sealing bead is to be done.
s≤0.8
2. When s＞5,
: Re-fitting.
5.12 Height of bracket toe. ( Unit : mm )
D e t a i l
Standard Range
Corrections
h
Designed
h ±5
θSft
S
Ⅲ. QUALITY STANDARDS
5.13 Slot holes
(DSME_DSQS_2016)
29
( Unit : mm )
D e t a i l
Standard
Range
Tolerance
Limit
Corrections
Position of scallop
Distance between slot
opening and hole.
d
d
Gap
s≤2
s≤2
When d＜75, web plate is to
be cut between scallop and
slot hole,
And fit the collar plate as per
following Fig.
d≥75
b : min. 50
When d is not sufficient enough,
correction shall be done in
accordance with design
practice.
1. When 3＜s≤5,
weld throat to be increased
as much as increase of gap
opening exceeding 3mm.
2. When 5＜s≤10,
nib to be chamfered and
built up by welding
3. When s＞10,
cut off nib and fit the
collar plate with the same
height as the nib.
( 20＜b≤50 )
s≤3
s≤3
d
b
S
SS
b
Ⅲ. QUALITY STANDARDS
5.14 Distance between welds
(DSME_DSQS_2016)
30
( Unit : mm )
D e t a i l
Tolerance Limit
Corrections
A. Distance between two
butt welds
d≥0
Primary structure
When butt is welded first, the
d≥10
Secondary structure
d＞0
Distance 'd' is
only for access
when fillet is
welded first.
weld is to be ground if fillet
welds are on or closed to the
welding seam.
Primary structure
d≥5
Secondary structure
d≥0
Primary structure :
If d＜5, enlarge scallop to
obtain distance between
welds.
a≥30
B. Distance between butt
weld and fillet weld
C. Scallops over
welding seams
D. Distance between
two butt welds
d
d
d
aaa
Ⅲ. QUALITY STANDARDS
6. UNFAIRNESS
6.1 Deformation
(DSME_DSQS_2016)
31
( Unit : mm )
D e t a i l
Standard
Tolerance
Range
Limit
Remarks
Shell plate
Parallel part
(Side & bottom shell)
Fore and aft part
Tank top plate
Bulkhead
Longi. bulkhead
Trans. bulkhead
Swash bulkhead
Parallel part
(Between 0.6L)
Strength deck
Fore and aft part
Covered part
Bare part
Second deck
Covered part
Fore-castle
deck
Poop deck
Superstructure
deck
Liftable car deck
Light car deck
Vent truck wall
Bare part
Covered part
Bare part
Covered part
Outside wall
House wall
Inside wall
Covered part
Secondary member
(web of girder, etc.)
Floor and girder of double bottom
4
5
4
6
4
6
7
6
7
7
4
6
4
7
4
6
7
5
5
L is one stiffener,
frame, or longi.
space.
If L＞3 meter,
the tolerance
should be applied
to the table of 6.2
"Deformation per
basic length".
In case thickness of
interior plate is 8mm
and less, the
tolerance is to be
added to 2mm.
8
9
9
8
9
9
8
9
6
9
6
8
9
7
8
La (Deformation value)
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
32
6.2 Deformation per basic length
( Unit : mm )
D e t a i l
Standard
Tolerance
Range
Limit
Remarks
Parallel part
±2L/1000 ±3L/1000
Shell plate
Fore and aft part ±3L/1000 ±4L/1000
Deck, Tank top of double bottom ±3L/1000 ±4L/1000
Bulkheads
±4L/1000 ±5L/1000
Accommodation & Others
±5L/1000 ±6L/1000
Basic length L is
one transverse space.
(min. 3 meters)
7. SURFACE FINISH CONDITION
7.1 Surface defects on plate
D e t a i l
Tolerance
Limit
- Soft round
- Sharp buckles and/or
surface flaws in plate
d≤0.07t
(max. 3mm)
( Unit : mm )
Correction
1. When d≤0.07t(max. 3mm)
defects are to be ground
off.
2. When d＞tolerance limit,
defects are to be ground off
but not deeper than 0.2t
and welded smoothly.
- Exposed area(weather
exposed area, main access
way of engine room and
workroom) : remove the weld
beads.
- Others : remain the weld
beads.
td
Ⅲ. QUALITY STANDARDS
7.2 Disposal of Scaffolding piece
Location
Removal
type
(DSME_DSQS_2016)
33
Corrections
Exposed area
- Exposed surface of shell, decks,
living quarters
- Outer surface of super structure
and funnel
- Top/Inside of deck store
Inside of accommodation
- Behind ceiling and lining
Lower than ceiling depth
Higher than ceiling depth
- Without ceiling and lining
- Deck covering
Inside of engine room (including
Inside of engine casing and funnel),
Steering gear room, Pump room,
Fore body and other work shop.
- Deck without any covering
- Deck under grating floor
- Under up to 2.0 meter height
above passage floor
(Only main passage and
equipment operation area)
- Other area
Inside of chain locker
Fresh water tank(SUS 316 material)
Cofferdams, Void space, Oil tanks and
Others
In cargo tanks, ballast tanks and
Specified area on attached DWG
X
X
△
○
△
△
X
X
△
△
○
X
○
○
Type X :
After removing piece, make
it as shown para. 7.1."Surface
defect on plate".
Type △ :
The piece shall be cut above
the beads, and sharp edges
shall be ground.
All around welding shall be done.
Type ○ :
The piece shall be remained
as it is, but all around welding
shall be done.
Details
are as
following
DWG.
Ⅲ. QUALITY STANDARDS
7.3 Disposal of lifting lug
Location
Removal
type
(DSME_DSQS_2016)
34
Corrections
Exposed area
- Exposed surface of shell, decks,
living quarters
- Outer surface of super structure
and funnel
- Top/Inside of deck store
Inside of accommodation
- Behind ceiling and lining
Lower than ceiling depth
Higher than ceiling depth
- Without ceiling and lining
- Deck covering
Inside of engine room (including
Inside of engine casing and funnel),
Steering gear room, Pump room,
Bosun store and other work shop.
- Deck without any covering
- Deck under grating floor
- Under up to 2.0 meter height
above passage floor
(Only main passage and
equipment operation area)
- Other area
Access trunk and chain locker
Fresh water tank(SUS 316 material)
Cofferdams, Void space and others
X
X
△
○
△
△
X
X
△
○
X
○
○
△ or □
Type X :
After removing piece, make
it as shown para. 7.1."Surface
defect on plate".
Type △ :
The piece shall be cut above
the beads, and sharp edges
shall be ground.
All around welding shall be done.
Type □ :
The extruded part of the "lapped
type lug" is to be cut off and
welded as below sketch,
and sharp edges shall be ground.
Type ○ :
The piece shall be remained
as it is, but all around welding
shall be done.
(Ordinary lifting lug, Lashing eyes,
Rib bracket and hand grips/steps)
In cargo tanks and ballast tanks
Details
are as
following
DWG.
Cutting line
30mm
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
(DSME_DSQS_2016)
35
COT (1)
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
COT (2)
(DSME_DSQS_2016)
36
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
(DSME_DSQS_2016)
37
COT (3)
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
VLCC (1)
(DSME_DSQS_2016)
38
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
VLCC (2)
(DSME_DSQS_2016)
39
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
VLCC (3)
(DSME_DSQS_2016)
40
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
BULK CARRIER
(DSME_DSQS_2016)
41
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
PRODUCT CARRIER (1)
(DSME_DSQS_2016)
42
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
PRODUCT CARRIER (2)
(DSME_DSQS_2016)
43
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
VLOC (1)
(DSME_DSQS_2016)
44
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
VLOC (2)
(DSME_DSQS_2016)
45
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
RO-RO VESSEL
(DSME_DSQS_2016)
46
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
CONTAINER SHIP (1)
(DSME_DSQS_2016)
47
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
CONTAINER SHIP (2)
(DSME_DSQS_2016)
48
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
LNG CARRIER (1)
(DSME_DSQS_2016)
49
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
LNG CARRIER (2)
(DSME_DSQS_2016)
50
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
LPG CARRIER (1)
(DSME_DSQS_2016)
51
Ⅲ. QUALITY STANDARDS
( 7.2 Disposal of scaffolding piece )
LPG CARRIER (2)
(DSME_DSQS_2016)
52
Ⅲ. QUALITY STANDARDS
( 7.3 Disposal of lifting lug )
OIL TANKER
(DSME_DSQS_2016)
53
Ⅲ. QUALITY STANDARDS
( 7.3 Disposal of lifting lug )
(DSME_DSQS_2016)
54
VLCC
Ⅲ. QUALITY STANDARDS
( 7.3 Disposal of lifting lug )
BULK(LOG BULK) CARRIER
(DSME_DSQS_2016)
55
Ⅲ. QUALITY STANDARDS
( 7.3 Disposal of lifting lug )
PRODUCT CARRIER
(DSME_DSQS_2016)
56
Ⅲ. QUALITY STANDARDS
( 7.3 Disposal of lifting lug )
(DSME_DSQS_2016)
57
RO-RO VESSEL
Ⅲ. QUALITY STANDARDS
( 7.3 Disposal of lifting lug )
CONTAINER SHIP
(DSME_DSQS_2016)
58
Ⅲ. QUALITY STANDARDS
( 7.3 Disposal of lifting lug )
(DSME_DSQS_2016)
59
LNG CARRIER
Ⅲ. QUALITY STANDARDS
( 7.3 Disposal of lifting lug )
LPG CARRIER (1)
(DSME_DSQS_2016)
60
Ⅲ. QUALITY STANDARDS
( 7.3 Disposal of lifting lug )
(DSME_DSQS_2016)
61
LPG CARRIER (2)
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
62
8. INSERT
8.1 Insert on the plate edge ( Unit : mm )
Note ;
1) Each end of the insert plate is to be released min. 100mm extended.
2) Joint towards the plate being joined is to be welded first.
3) R = 5 x plate thickness, min. 100mm.
8.2 Insert of built-up member
( Unit : mm )
Weld sequence ː ① → ② → ③ → ④
100100min.3002)1)1)
100100min.3003)2)1)1)min.300R
①②③min. 300④
Insert100100③④
Ⅲ. QUALITY STANDARDS
8.3 Insert of holes
(DSME_DSQS_2016)
63
※ Insert of holes is to be made according to type 1), 2) and 3).
After tack welding, welding sequence should be kept as follows;
(a) R = 5 x Plate Thickness (Min. 100mm)
(b) Weld Sequence : ① → ② → ③ → ④
(c) b, c : min. 300mm or ten times the plate thickness, whichever is the greater
1) Lap type 2) Insert type 1 3) Insert type 2
D e t a i l
Method
Skin plate(shell), Deck,
Longitudinal bulkhead,
Transverse bulkhead and
High stress area
Insert type
Others
Lap type
Holes up to 25mm diameter
in W.T or area of stress
concentration.
(near toes of brackets, etc.)
To be closed by welding or welded by means of
reinforcement.
30 - 50a : max.200a
b③②④①①②③④
R c
(DSME_DSQS_2016)
64
( Unit : mm )
Corrections
Grind off
Weld up
Where θ＞90o, it is to be
repaired by grinding or
welding to make θ≤90o.
Ⅲ. QUALITY STANDARDS
9. WELDING / WELD CONDITION
9.1 Shape of bead
D e t a i l
Tolerance Limit
B: Not defined
θ≤90o
h: max. 6mm
h
Breadth of bead
flank angle.
θ
B
Undercut in welding
Butt weld
a≤0.5
(Length of less
than 90 mm)
Main structures
within 0.6L
(Skin plate,
Longi. member
and principal
transverse
supporting
members)
Butt weld
a≤0.8
Others
When undercut
exceeds the
tolerance limits,
it shall be ground
smoothly(locally)
or filled up by
welding.
However, the
filled up welding
shall not be
ground off.
(Short bead
shall be avoided
for high tensile
steel)
Fillet weld
A≤0.8
SMAW
Diameter of
electrode x 3.5
FCAW
max. 23 mm
Low temp. steel
max. 19 mm
Weaving width
aa
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
65
9.2 Repair weld of surface defect
( Unit : mm )
D e t a i l
Tolerance Limit
Base metal Welded metal
Remarks
Cast steel
Weld
length
Weld
Length
High tensile steel
ℓ≥50
ℓ≥50
Mild steel
Low temp. steel
Weld
length
Weld
length
ℓ≥10
ℓ≥30
Weld
length
Weld
Length
ℓ≥50
ℓ≥50
For casting steel, preheating
necessary as per WPS.
Where short bead is necessary,
preheating shall be done up to
100±25℃.
In case short bead is made
erroneously, it shall be removed
by grinding and rewelded.
For base metal which could be
affected by risk of cold cracking,
the short bead part to be
ground off 2 to 4mm in depth
and rewelded.
9.3 Temperature required preheating
High tensile steel
Air temperature
Low temp. steel
T≤0℃
Mild steel
T≤-5℃
9.4 Repair of arc strike
High tensile steel
Cast steel
Not permitted
If arc-strike is made erroneously,
the hardened zone shall be
removed by grinding.
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
66
9.5 Shape of fillet welds ( Unit : mm )
D e t a i l
Tolerance Limit
Corrections
L : Leg length
T : Throat thick.
L≥0.9 x Design
Figure
* T≥0.9 x Design
Figure
In case the length is less than the
tolerance limits, the weld is to
be increased.
* Undersize portion shall not exceed
10% of weld length in a span.
9.6 Weld surface
( Unit : mm )
D e t a i l
Corrections
Remarks
Spatter
Irregularity of
manual weld
1. Remove spatter observed before
blasting with scraper or chipping
hammer, etc.
2. For spatter observed after blasting;
1) Remove with a chipping hammer,
scraper, etc.
2) For spatter not easily removable
with a chipping hammer, scraper,
etc., grinding the sharp angle of
spatter to make it obtuse.
When the surface irregularity
exceeds 3mm, apply the grinding
until the irregularity becomes less
than 3mm.
h ≤ 3 mm
In principle no
grinding is applied
on weld surface.
This standard is
applied to fillet
weld as well.
TL
h
Ⅲ. QUALITY STANDARDS
( 9.6 Weld surface )
(DSME_DSQS_2016)
67
D e t a i l
Corrections
Remarks
Over lap
In case θ is less than 90o, it shall
be repaired by suitable method to
make θ＞90o.
Weld defect
The following defects are to be
removed by suitable method.
Example :
1) Crack
2) Clustered porosity
3) Short bead
4) Arc strike
5) Hydrogen porosity
Short bead is
avoided for high
tensile steel.
Weld defect like
crack is to be
examined by
NDE(MT) before
repair welding.
θ
θ
Ⅲ. QUALITY STANDARDS
10. GRINDING
(DSME_DSQS_2016)
68
( Unit : mm )
D e t a i l
Grinding Standard
Remarks
Cleanliness of
the weld groove
Gas cut edge
of high stress
members
Thick rusted scale
is to be removed
by grinding or
brushing
1) As-cut surface or as-rolled
surface is acceptable for all
welding.
2) As-rusted surface is acceptable
for manual welding but not
acceptable for automatic welding.
3) As-gouged surface is acceptable
for A to D grade and AH grade
steel.
Slag, crack, incomplete
penetration and clustered
porosity on the gouged
surface are to be completely
removed.
Gouged burrs are to be
completely removed.
The high stress members mean the
openings of strength deck and the
free edge of sheer strake.
When noted on the drawing,
it is to be as per the drawing.
DetailGrind to 1∼2c
1∼2mm
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
69
10. GRINDING (Gas cut edge general) ( Unit : mm )
A r e a
Detail
Standard
Grind to 1C
OPTION 1
In accordance with building
specification.
A. Painting
area
Legend : "1C"
Grind to 2C
Legend : "2C"
OPTION 2
In accordance with building
specification.
B. Painting
area (Non-
exposed
area and
general)
Machinery Space
Cargo Holds
(B/C, Container, Ro-Ro,
Drill ship)
No Grinding
C. Others
(Incl. no
painting
area)
Except above A and B
No Grinding
0.5~1mm
45±15˚
1~2mm
45±15˚
Ⅲ. QUALITY STANDARDS
11. ACCURACY OF HULL FORM
11.1 Principal dimension
(DSME_DSQS_2016)
70
( Unit : mm )
D e t a i l
Standard
Tolerance
Range
Limit
Remarks
Length
Length between
Perpendiculars
Length between
aft-perpendicular
and forward
bulkhead of
engine room
Breadth
Moulded breadth
(Amidships)
Depth
Moulded depth
(Amidships)
±50
Not defined
per 100m
±25
Not defined
±15
Not defined
±10
Not defined
Applied to ships of 100m
length and above.
Accuracy in accordance
with the shaft length.
Applied to ships of 10m
depth and above.
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
71
11.2 Deformation of hull form
( Unit : mm )
D e t a i l
Standard
Tolerance
Range
Limit
Remarks
Deformation for
the whole length
±25
Not defined
Up(+) and down(-)
against the check line
of the keel sighting.
Flatness
of keel
Deformation for
the distance
between two
adjacent bulkheads.
Cocking of Fore-body
Cocking
Cocking of Aft-body
Rise of floor amidships
±15
Not defined
±30
Not defined
±20
Not defined
±15
Not defined
Sighting by the transit
or laser.
Local unfairness is
referred to section 6.
"Unfairness".
Up(+) and down(-)
against the check line of
the keel at the fore most
frame on the flat part of
the keel.
Up(+) and down(-)
against the check line of
the keel at the
aft-perpendicular.
The height of the lower
turn of the bilge,
compared with the
planned height.
Measured from the plane
passing through the
outer surface of the keel
plate.
b.lineδF.PF.P BHD
cL b.line
Ⅲ. QUALITY STANDARDS
12. MISCELLANEOUS
12.1 Draft mark
(DSME_DSQS_2016)
72
( Unit : mm )
D e t a i l
Standard
Tolerance
Range
Limit
Remarks
In regard to the templet
±1.0
±2.0
12.2 Freeboard mark ( Unit : mm )
In regard to the templet
±0.5
±1.0
12.3 Opening of entrance ( Unit : mm )
Opening of
Steel door
Breadth and
height
Sill height
Deformation
±4
±7
0∼15
-10∼+30
±2 /1000
±3 /1000
Breadth
Length
Opening of
Deck
±2
±3
±3
±5
PART Ⅲ. OUTFITTING & MACHINERY PART
◇ CO N TE N TS ◇
Ⅰ. MAJOR PROCESSES
1. Piping Process
2. Pre-outfitting Process
3. Machinery Outfitting Process
4. Electric Outfitting Process
Ⅱ. CATEGORIES OF INSPECTION
AND TEST ITEMS
1. Hull Outfitting Part
2. Machinery Part
3. Piping Part
4. Electric Part
5. Remote Control/Automation Part
Ⅲ. QUALITY STANDARDS
1. Main machinery
2. Auxiliary machinery
3. Piping
4. Sheet metal outfitting
Page
74
82
83
96
98
104
109
112
116
117
119
123
138
Ⅰ. MAJOR PROCESSES
1. PIPING PROCESS
1.1 Pipe Bending
(DSME_DSQS_2016)
74
(1) Pipe bending is to be carried out by the cold bending machine having
bending radius of approximately 2∼3 times the outside diameter of the pipe.
(2) Ellipticity, swells and rumples caused by bending of pipes shall not exceed
the quality standards para. 3.2.
(3) In case the regular pipe bending, as mentioned above, can not be applied
due to following reasons, the commercial bent pipe is to be used.
(a) When the capacity of existing bending machine is not enough to bend,
(b) When the non-standard bending radius is necessary to facilitate the
piping arrangement.
(4) The commercial bent pipe should be of seam or seamless for general piping
systems for those of nominal dia. 200mm below, and the fabricated pieces
may be commonly used for those of nominal dia. 200mm and above, if there
is no specific requirements from the Classification Society.
(5) In case the arrangement is difficult to use the commercial bent pipe, the miter
welding pipe having a radius approximately equal to the nominal pipe
diameter is to be applied. However, the miter welding method is to be applied
only to low pressure and large size pipes, such as exhaust gas, sea water,
exhaust steam piping, etc.
(6) Hot bending or High frequency bending may be applied in accordance with
the requirements of the Classification Society as a special case.
(7) For adjustment of pipe alignment at pipe installation stage, hot process could
be restrictively applied.
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
75
1.2 Finishing of Weld Parts after Pipe Fabrication
Weld beads on inside surface of fabricated pipes shall be finished to suit the
intended purpose of the respective piping system in accordance with the
following three grades.
<GRADE A>
(1) Weld beads of pipe insides shall be finished smoothly, and welding spatters
and slag shall be removed.
(2) This grade applies to lubricating oil pipes, hydraulic oil pipes, fuel oil
injection pipes after the 2nd filter for main diesel engine, turbine steam
pipes and for synthetic rubber or plastic lined pipes.
<GRADE B>
(1) Welding spatters and slag shall be removed and welded beads shall be
cleaned.
(2) This grade applies to power steam pipes, turbine exhaust pipes, cryogenic
pipes, fuel oil service pipes, drinking water pipes, nozzle cooling pipes,
feed water pipes, condensate water pipes, sea water cooling pipes,
compressed air pipes, tank cleaning pipes and vent pipe for cargo tanks.
<GRADE C>
(1) Weld beads of pipe insides do not need to be finished.
(2) This grade applies to all other pipes which are not specified in GRADE A
and GRADE B, and open ended lines like drains, overflows, vents and
boiler escape pipes.
1.3 Flange Fitting in Shop
When the pipe is inserted into the flange for joining, inserting depth should be
controlled so that the welding bead will not overpass the flange face. The
flange face is usually not finished by grinding, but welding spatters and slag
on its face shall be removed.
Ⅰ. MAJOR PROCESSES
1.4 Pipe Joints
(DSME_DSQS_2016)
76
In general, pipe joints are grouped as follows by their use. Specially,
cryogenic pipes subjected to the IGC Code for cargo and related systems
shall be referred to in the following table.
Pipe Joints For Cryogenic Cargo System Pipes :
Kind of Joint
Application
Remarks
Butt welded joint
- Design temp. below -10℃
Backing rings or gas
purging shall be used on
the 1st pass.
Backing rings shall be
removed for design
press. in excess of 10
bar and design temp. of
-10℃ or lower.
Slip on welded
joints with sleeves
and related welding
- Open ended lines with
external dia. of 50mm
or less
- Design temp. not lower
than -55℃
Screwed coupling
- To be only used for
accessory lines and
instrumentation lines
with external dia. of
25mm or less
Welded neck
flange
Slip on flange
Socket welded
joint
- For design temp. lower
than -55℃
- Not to be used for design
temp. lower than -10℃
N.D above 100mm.
- Not to be used for design
temp. lower than -10℃
N.D above 50mm.
Bellows and
expansion joints
- To be used to allow for
expansion of piping
Piping connections,
otherwise mentioned
here shall be accepted
by the administration/
Classification Society in
each case.
If necessary, bellows
shall be protected
against icing
Slip joints
- Not to be used except
within the cargo tanks
Ⅰ. MAJOR PROCESSES
1.4.1 Sleeve Joints and Butt Joints
(DSME_DSQS_2016)
77
(1) Generally, sleeve welded joints and butt welded joints are to be applied for
permanent joints in spaces such as tanks, cargo holds, cofferdams, void
spaces, ducts, store spaces, accommodation spaces, hatch side spaces,
etc., unless other joints are specified in the building Specifications.
(2) Butt welded joints may be applied to the commercial bent pipe and T-piece.
1.4.2 Flange Joints and Union Joints
(1) Flange joints, union joints and other separable joints are to be applied in
the engine room, pump room, steering gear room, other machinery spaces,
and on exposed decks for facilitating to remove the pipes whenever
required.
(2) Flanges or screwed union joints are to be used at the connection parts to
all pipe fittings, machinery and equipment for maintenance or overhaul
purposes.
1.4.3 Joints for Non-Ferrous Pipes
Pipe joints for non-ferrous pipes are to be applied similar to those for steel
pipes. However for joining of plastic pipes, pipe joints are to be followed in
accordance with the Classification Society's requirements unless otherwise
specified in the Specifications.
1.4.4 Joint Gaskets
Universal heat and oil resisting non-asbestos joint sheets shall be used
generally in all piping systems.
1.5 Adjusting Pipes
(1) Adjusting pipes are to be generally used for connections between pipe and
equipment or pipes already fitted on the blocks. The flanges of the adjusting
pipes may be welded on board.
(2) The flange angle of the adjusting pipe could be sloped in order to make
parallel the connecting flange faces.
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
78
(3) For correction of alignment for pipe connection, the spot heating process
could be applied. However, this method can not be applied to lubricating and
hydraulic oil pipes.
1.6 Pipe Galvanizing
(1) The galvanizing shall be carried out after fabrication of pipes. However, if the
welding is inevitably carried out the galvanized pieces during installation
process such as in the cases mentioned below, the external surface of the
welded parts shall be touched up with zinc rich epoxy primer :
(a) Socket welded joint or welded sleeve joint fabricated on board
(b) Middle flange of penetrating piece adjusted on board
(c) Anchoring piece welded on galvanized pipe after adjusted on board
(except sea water handling system)
(d) Flange joint adjusted on board (except sea water handling system)
(2) Internal surface of the welded part of flange joints adjusted on board shall be
touched up with zinc rich epoxy primer instead of zinc solution paint for better
resistance against corrosion as far as practicable.
1.7 Pipe Pickling by Acid
(1) After fabrication of the steel pipes, acid cleaning shall be carried out before
installation on board. For the steel pipes applying the polyethylene lining,
blasting shall be carried out instead of acid cleaning before lining.
(2) Phosphate treatment after acid cleaning shall be processed for the steel
pipes except for the pipes applying galvanizing or polyethylene lining.
(3) For proper prevention from rusting, following pipes shall be blown out with
compressed air and dried before installation on board.
(a) Lub. oil pipes except drain pipes and air vent pipes.
(b) Fuel oil service pipes for main engine, aux. engine and aux. boiler.
(c) Hydraulic oil steel pipes.
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
79
(4) Exposed flanges of unfinished piping installed on board shall be protected by
means of end caps (plugs or blanks), and precaution shall be taken to
ensure the pipes remain sealed after cleaning.
1.8 Bolts for Pipe Flange Joint
(1) KS(JIS) Standard hexagonal head bolts and nuts of galvanized steel are to
be generally used for pipe flange joints.
(2) The length of bolts protruding beyond the nuts after tightening is to be
between zero and 1/2 Bolt diameter.
1.9 Pipe Supports
(1) In General, steel supports and U-type bolts are to be applied to pipe lines at
suitable intervals. Pipe supports for non-ferrous are to be lined with copper,
brass or lead plate, plastic or synthetic rubber.
(2) The length of the screw part of the U-type bolts protruding beyond the nuts
after tightening is between zero and a half of the bolt diameter.
1.10 Hydrostatic / Leakage Test of Piping
(1) The piping systems are to be done hydrostatic / leakage test using suitable
medium at the completion of installation to check the strength and/or leakage
in the system.
(2) All piping joints may be primed and painted prior to hydrostatic or leakage
testing.
1.11 Non-destructive Test for Welded Joint of Piping
The following non-destructive test shall be applied to welded joints designated
by the Classification Society according to the rules and/or any other parts
where mutually agreed upon.
(a) Radiographic Test (RT) (b) Ultrasonic Test (UT)
(c) Magnetic particle Test (MT) (d) Penetration Test (PT)
Ⅰ. MAJOR PROCESSES
1.12 Air Conditioning and Refrigeration Plant Piping
(DSME_DSQS_2016)
80
After install of the refrigerant piping, the pressure and vacuum test to be
carried out according to following conditions.
(1) Pressure Test
Division
Test Pressure
Allowable Pressure
Test Duration
(kg/㎠ㆍG)
Drop (kg/㎠ㆍG)
(Hours)
High Pressure side
Low Pressure side
22
15
Less than
0.35
4
The final pressure drop to be calculated as follows.
P0 – P(T0/T) ≤ 0.35 (kg/㎠ㆍG)
T0 : The Initial Temperature T : The Final Temperature
P0 : The Initial Pressure P : The Final Pressure
(2) Vacuum Test
Vacuum Pressure
Allowable Pressure
(mmHg)
Drop (mmHg)
Test Duration
(Hours)
740
Less than
1
12
1.13 Piping Earthing
The following lines, which are connected with gasket flange joints, shall be
electrically bonded to the hull structure with tooth washer, bonding wire or
bonding plate.
(a) Cargo oil line
(b) Inert gas line
(c) Tank cleaning line
(d) Vapor emission control line
(e) Electric cable pipe line
(f) GRP(or GRE) line in dangerous area
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
81
And the detail earthing method shall be followed to the approved piping
practice.
1.14 Flushing/Cleaning of Piping System
(1) The piping systems are to be flushed/cleaned after the completion of the
piping system on board as the table below.
(2) For flushing by oil, the temporary filters and magnets are to be fitted in strainers.
(3) The flushing is to be completed when the filters have been maintained
constantly with clean condition for over two(2) hours of flushing.
Piping
Applied system
Flushing/cleaning method
Lub. oil
piping
M/E L.O
System oil
M/E CYL. L.O
Compressed air
Generator engine (D/G, T/G)
Compressed air
L.O transfer,
L.O purifier, S/T L.O
Compressed air
L.O filling
Compressed air
Compressed
air
Main engine starting air,
Aux. diesel engine
starting air and control air
Compressed air
Hyd. oil
piping
Deck machinery
Flushing oil
V.R.C system (main line)
Flushing oil
V.R.C system (multi line)
Nitrogen
Steam piping
Steam supply line for steam
driven machinery
Compressed air
Ⅰ. MAJOR PROCESSES
2. PRE-OUTFITTING PROCESS
2.1 Outfitting Work during Block Assembly
(DSME_DSQS_2016)
82
Outfitting such as pipes, ducts, supports, electric cable trays, machinery seats,
platforms, coaming, hand grips and steps, etc. are to be fitted during hull
block assembling work or block assembly site as far as practicable.
2.2 Outfitting Work during Block Erection
In general, the installation of machinery, electrical equipment and outfitting,
etc. are to be carried out at pre-erection stage of hull block and/or dock stage,
which may be made in parallel with the hull construction works.
2.3 Unit Assembly
(1) Auxiliary machinery having similar function or closed locations are to be
installed in a unified common skid as one unit. The unit consists of auxiliary
machinery, electrical equipment, their seats, piping and steel outfitting, etc.
All components necessary to the unit are assembled in the unit shop or
sub-supplier shop.
(2) Each unit is to be installed at block stage or pre-erection stage. After
installing the unit, the shaft centering of aux. machinery is to be checked and
corrected by use of shim plate, if required.
2.4 Outfitting of Living Quarters Construction
(1) Outfitting such as mast, posts, piping, ducting, paneling, ceiling, flooring and
cabling, etc. are to be done at the assembling site as far as practical.
(2) In connection with the outfitting works, hydraulic or water flooding test of
piping may be carried out individually at each block, and then connection
joint parts are to be checked on-board after the whole installation has been
completed.
2.5 Galvanizing of Fittings
Galvanized surfaces must be practically smooth and free from conspicuous
defects such as bare spots.
※ Note ; Damaged parts caused by gas cutting or welding are to be
generally touched up by zinc rich solution paint.
Ⅰ. MAJOR PROCESSES
3. MACHINERY OUTFITTING PROCESS
3.1 Shafting and Propeller
(DSME_DSQS_2016)
83
3.1.1 Shaft Centering and Stern Tube Boring
(1) Condition of shaft centering
a. Shaft centering is to be carried out after stern boss block is assembled and
welded to the main engine bed plate block.
b. Shaft centering is to be carried out at pre-erection area or in the dock.
(2) Procedure of shaft centering and stern tube boring
Shaft centering is to be carried out before or after stern tube boring.
Case 1
Shaft centering before stern tube boring
a. After above-mentioned condition is completed, shaft centering is to be
carried out.
b. Fix the center line level between stern boss and main engine. (see Fig. 1)
c. Measure the distance of the shaft length and the dimension of engine bed
plate according to the Shafting Plan (drawing).
d. Bore the Aft & Fwd stern boss.
* A. B :CENTER OF STERN TUBE BOSS
Fig 1-1. Shaft centering (Case 1)
Fig 1-2. Shaft centering (Case 1)
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
84
Case 2
Shaft centering after stern tube boring
a. Fix the center line level between the stern boss and “D”. (see Fig. 2)
b. Bore the Aft & Fwd stern boss.
c. Shaft centering is to be carried out based on the machined surfaces of the
stern boss after main engine bed plate block is assembled and welded to the
stern boss block.
d. Fix the main engine center line level by extending the stern boss center line.
e. Measure the distance of the shaft length and the dimension of the engine
bed plate according to the Shafting Plan (drawing).
* A. B :CENTER OF STERN TUBE BOSS
Fig 2. Shaft centering (Case 2)
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
85
3.1.2 Rudder Horn Boring at Pre-erection Stage
(1) Application condition
This case is to be applied when rudder horn boring is carried out at shop
before block assembly.
(2) Procedure
a. After rudder horn block is erected and welded to steering gear deck block
completely, rudder centering is carried out at dock stage.
b. Install the piano wire.
c. Measure the dimension and eccentricity of rudder horn gudgeon.
d. Bushes are to be machined in accordance with the eccentricity of the rudder
horn gudgeon.
e. Fit the bushes by chilling with liquid nitrogen.
f. Bush fitting by chilling with liquid nitrogen is carried out at shop stage in case
of full spade rudder.
Fig 3. Rudder horn boring
M/DECKS/G DECK"A""B""C"
Ⅰ. MAJOR PROCESSES
3.1.3 Rudder Centering
(1) Condition of rudder centering
(DSME_DSQS_2016)
86
Rudder centering is to be carried out after rudder horn block, (A.P tank) E/R
block and steering gear deck are assembled together and strength members
of hull structure. However, the main deck block above the steering gear deck
can be excluded in some cases.
Fig 4. Condition of rudder centering
(2) Procedure of rudder centering
After above-mentioned condition is completed, rudder centering is to be carried
out.
Case 1
Check with piano wire after shaft installation
a. The piano wire is to be installed at the end of propeller shaft center with jig
“N”, and between center of rudder horn.
b. Measure the deviation between the rudder center and the shaft center.
c. Measure the inside radius of rudder horns.
M/ DECK
S/G DECK
O
U
PIANO
WIRE
M/E
JIG “N”
A.P
Fig 5-1. Rudder centering (Case 1)
M/DECKS/G DECK"A""B""C"
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
87
Case 2
Check with Electronic Distance Measurement(E.D.M) equipment
a. Three targets (W1, W2, W3) is to be installed on the bottom plate of the
vessel in order to figure out the base surface.
b. The deviation between shafting center and rudder center is to be measured
using the E.D.M after confirming the base surface and then, measure the
inside radius of rudder horns.
Fig 5-2. Rudder centering (Case 2)
Case 3
Check with the bottom base after shaft installation
(Horizontal rotating laser beam)
a. Three targets (B1, B2, B3) is to be installed on the bottom plate of the
vessel in order to figure out the base surface.
b. The deviation between shafting center and rudder center is to be measured
using the vertical laser beam after confirming the base surface and using
the horizontal rotating laser beam.
c. Measure the inside radius of rudder horns.
Fig 5-3. Rudder centering (Case 3)
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
88
Case 4
Check with laser measuring equipment after shaft installation
a. The optical alignment machine “M” is to be installed at the end of propeller
shaft center.
b. The center line of the shaft to be extended on the optical nadir plummet
machine “P”. Optical nadir plummet machine “P” is to be installed at the
position “AP”.
c. The centering gauges are to be installed the steering gear deck, inside of
upper/lower horns.
d. The deviation between shafting and rudder system can be measured through
the target attached at the center of optical nadir plummet machine. (Y – axis)
e. Measure the inside radius of rudder horns.
M/ DECK
S/G DECK
O
U
L
P
M
A.P
M/E
Fig 5-4. Rudder centering (Case 4)
Case 5
Check with piano wire before shaft installation
a. Install the piano wire at the shaft center line from forward stern bearing
center to A.P line.
b. Install the piano wire from center of rudder born perpendicularly to the ground, and
then measure the deviation from the shaft center line.
c. Measure the inside radius of rudder horns and stern bosses.
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
89
M/ DECK
S/G DECK
B
C
D
E
F
A
M/E
A.P
Fig 5-5. Rudder centering (Case 5)
Case 6
Check with laser measuring equipment before shaft installation.
a. The centering gauges are to be installed at the stern boss.
b. ser measuring equipment (Total Station) is to be installed at the position “M”
and level adjusting and zero setting to be done.
c. The centering gauge and level-measuring machine are to be installed in line
with rudder center.
d. The deviation between shafting and rudder system can be measured through
the target attached at the center of level-measuring machine. (Y – axis)
e. Measure the inside radius of rudder horns and stern bosses.
A & B : CENTERING GAUGE M : TOTAL STATION
※
S/G DECK
D
E
F
M
A
B
M/E
Fig 5-6. Rudder centering (Case 6)
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
90
Case 7
Check with piano wire & laser measuring equipment
after shaft installation.
a. In some case, piano wire and laser measuring equipment (Total Station) can
be used for measuring.
ex. 1) Shafting : Piano wire ------- Rudder : Total Station.
2) Shafting : Total Station ------- Rudder : Piano wire.
b. Then, measure the eccentric condition of the rudder horn.
3.1.4 Fitting of Stern Bush
Case 1. Press fitting
(1) The installation of stern bush is to be carried out by using hydraulic oil jack
as below figures.
a
b
Stern frame
Oil jack
Oil jack
After
bush
stern
Fore
bush
stern
FRxx
(2) Pressure and load of the hydraulic power are to be measured against
inserting distance of the bush.
(3) The measurement is to be recorded from the last 100mm(b) drive for
forward bush and from the last 200mm(a) drive for the aft-bush.
(4) Insertion load is decided according to the design calculation of shafting
plan.
Ⅰ. MAJOR PROCESSES
Case 2. Freeze fitting
(DSME_DSQS_2016)
91
In case of resin bush, the installation of stern bush is to be carried out by the
maker recommendation.
Case 3. Epoxy resin fitting
The installation of stern bushes is to be carried out by pouring epoxy resin.
Before pouring the epoxy resin, the centering of stern bushes shall be
confirmed.
3.1.5 Contact Conditions of Propeller Shaft and Propeller
(1) The contact condition is to be checked by contacting the propeller's boss
and shaft with coating the blue or red paint on cone-part of the shaft.
(2) When the keyed propeller is provided, after fixing the key to propeller shaft,
the contact condition of the cone-part is to be checked.
Acceptable contact ratio of the cone-part is at least 70% of matching surface.
3.1.6 Fitting of Propeller
The required push-up distance of propeller is obtained from the computation
table to which the measured temperatures are applied.
3.1.7 Tightness Test of Oil Seal
(1) After installation of the seals at the fore and aft part of the stern bearing, the
oil is to be filled in the stern tube and the head tank up to the level
corresponding to the ship's full loaded condition, and then the oil level is to
be maintained at least for 4 hours.
(2) The leakage of the oil seals is to be checked after detaching the bottom
plugs of the seals.
3.1.8 Installation of Shaft
(1) The propeller shaft with propeller can be installed at pre-erection stage or in
dock (including floating dock).
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
92
(2) The main engine and the intermediate shaft bearings are to be temporarily
installed and then the shaft is to be fixed with the off-set value decided in the
design stage.
(3) After adjusting the off-set, the shaft is to be connected with the coupling
bolts.
(4) The shaft is to be installed in accordance with the calculation of shafting
alignment.
3.2 Main Diesel Engine & Appurtenant Equipment
3.2.1 Tightening of Holding-Down Bolts
Hydraulic tightening of holding down bolts and end chock bolts is carried
out as detailed in the foundation plan of main engine.
3.2.2 Installation of Main Engine
(1) In case Epoxy Resin is applied, the hardness is to be confirmed according to
manufacturer's recommendation.
(2) The deflection of crankshaft is to be measured by turning the crankshaft
according to manufacturer's recommended direction using turning gear.
The allowable limit of the deflection is to be applied in accordance with
the engine manufacturer's recommendation.
3.2.3 Installation of Reduction Gear
(1) All the adjusting liners of the reduction gear are to be inserted or epoxy
resin is to be poured according to the installation guidance by design
plan.
(2) All the bolts of the reduction gear are to be fitted and tightened, and then the
tooth contact condition is to be checked.
Ⅰ. MAJOR PROCESSES
3.3 Boiler
(DSME_DSQS_2016)
93
(1) If the boiler unit is assembled at shop, the hydrostatic test is to be carried out
at shop according to the rules of the Classification Society.
Any hydrostatic test for boilers shall not be performed on-board except the
hydrostatic test is not carried out at shop for any reason.
(2) If necessary, soda boiling is to be carried out to remove oil, grease, paint or
alkaline formation at shop.
3.4 Auxiliary Machinery
3.4.1 Diesel Generator
(1) Fitting condition of chock liners and tightening condition of holding down
bolts are to be checked.
In case Epoxy Resin is applied, the hardness is to be confirmed according
to manufacturer's recommendation.
(2) Crankshaft deflection is to be measured to confirm that it is within the
allowable limit recommended by the engine manufacturer.
(3) Before filling the system oil, cleaning condition is to be confirmed, if there is
any foreign matter in the crankcase. It is not to be necessary to remove the
anti-rust stuff coated by the engine manufacturer.
3.4.2 Turbo Generator
(1) The alignment is to be adjusted in accordance with the manufacturer's
recommendation.
In case of three-point supported turbo-generator set, only the gear tooth
contact shall be checked.
(2) The fitting condition of chock liners and the tightening condition of holding
down bolts shall be checked.
(3) After sea trial, the tooth contact condition of the reduction gear shall be
examined by visual checking through peep holes.
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
94
3.4.3 Turbine Driven Cargo Oil Pumps & Ballast Pumps
(1) Fitting conditions of chock liners and tightening condition of holding down
bolts are to be checked.
(2) The alignment of the coupling is to be confirmed by using a dummy or
working intermediate shaft. The allowable alignment limits are as follows.
For horizontal type
: 0.5mm by rim reading and 0.25mm by face reading.
For vertical Type
: 1.00mm by rim reading and 0.5mm by face reading.
※ If there is the allowable limit recommended by the maker, it shall prevail.
3.4.4 Shaft Alignment of Turbine Driven and Motor Driven Auxiliaries
The allowable limit of the shaft alignment is referred to in the Quality
Standards para. 2. Auxiliary Machinery.
3.4.5 Installation of Auxiliary Machinery
Installation condition of aux. machinery is to be checked as follows ;
(1) Grade "A" Auxiliary Machinery
The tightness of chock liners is to be checked by hammering after tightening
the holding down bolts and the gap is to be checked by a feeler gauge of
4/100mm thickness. The feeler gauge should not be inserted more than
10mm.
Grade "A" ; Generator set, plumber blocks, steering gear and aux. turbines.
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
95
(2) Grade "B" Auxiliary Machinery
The tightness of chock liners is to be checked by hammering after tightening
the holding down bolts.
Grade "B" ; Pumps, ref. machines, emergency diesel generator, and other
rotating or reciprocating aux. machinery.
(3) Grade "C" Auxiliary Machinery
The tightness of chock liners is to be checked by hammering after tightening
the holding down bolts.
If the auxiliaries and the seats are assembled in a unit at shop, such checking
is to be performed at shop.
Grade "C" ; Strainers, heaters, coolers, electric apparatus and other static
aux. machinery, exh. gas boiler and portable tanks.
3.4.6 Installation of foundation bolts for Auxiliary Machinery
All foundation bolts of equipment shall be Installed In accordance with maker
standard.
If there is no reference or any mention in the maker standard shall be
installed in accordance with yard standard as below.
(1) Bolt head shall be installed under side of foundation.
If bolt head won’t be installed under side of foundation, it can be installed
upper side of foundation.
(2) In case of Double nut, it shall not be inserted the “washer”.
(3) Nut shall be tightening by Double nut and it shall be Installed either
1 class+2 class or 2 class+2 class.
Ⅰ. MAJOR PROCESSES
3.5 Overhauling
(DSME_DSQS_2016)
96
After completion of sea trial, main engine is to be overhauled for one cylinder
unit and checked to confirm that major parts are in normal condition.
Following major parts are carefully investigated;
(1) Piston complete
(2) Cross-head pin and bearing
(3) Crank pin bearing
(4) Upper and lower shells of main bearing
4. ELECTRIC OUTFITTING PROCESS
4.1 General
(1) Cable runs are generally not to be laid on or covered with thermal insulation.
(e.g. through refrigerated cargo holds), but may cross through such insulation.
(2) Cable runs are to be installed well clear of substantial heat sources such as
boilers, heated oil tanks, steam, exhaust or other heated pipes, unless it is
ensured that the insulation type and current ration is adapted to the actual
temperatures at such spaces.
(3) In case intrinsically safe cables pass through a hole on the hull structure
together with other kinds of cables, the intrinsically safe cables must be
separated as per the rule requirement. (at least 50mm separated)
4.2 Cable bending
The internal radius of cable bends which are subject to movements by expansion
is not less than that of rule requirement.
(Min. 6D, 15D in the case of High Voltage Cable.)
4.3 Spacing of fixing point.
- In case of vertical laid on, the fixing points shall be provided every 300mm distance.
- In case of horizontal laid on, the fixing points shall be provided 900mm distance
Ⅰ. MAJOR PROCESSES
4.4 Earthing connection & conductors.
(1) General
(DSME_DSQS_2016)
97
a. All non-current carrying exposed metal parts of electrical machines or
equipment should be earthed unless the machines or equipment are
supplied at a voltage not exceeding 50V DC/AC or except where except
where exempted by classification society.
b. Metal enclosures which are installed directly on the hull, or on steel
constructions which are welded to the hull, are to be permanently earthed
through metallic contact with structure by means of fixing devices, if a reliable
contact is obtained.
Alternatively, They are to be connected to the hull by a separate conductor
in accordance with below table.
(2) Earthing of metal covering of cables
a. Steel braided cable should be earthed effectively at the both ends except
for the final branch circuits which are earthed at feeder side only.
b. Metal covering of electronic communication, instrumentation equipment and
intrinsically safe circuits should be earthed at one end only. But intrinsically
safe circuits are to be in accordance with the relevant certification if indicated.
c. The metal coverings of cables installed in dangerous zones or spaces are
to be effectively earthed at least at both ends.
d. All armour of cables should be electrically continuous and should be earthed.
4.5 Cable pipes
(1) The sum of the cables total cross-section, based on the cables external diameter
is not to exceed 40% of the pipe’s internal cross-section.
This does not apply to a single cable in pipe.
(2) The expansion/compression possibility is to be at least ±10mm for every 10
meter section length from the fix point.
(DSME_DSQS_2016)
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
98
1. Hull outfitting part
1.1 Mooring arrangement
1) Anchor and chain
- Drop and proof test
- Identification of marking
2) Chain compressor
- Fabrication inspection
3) Windlass
- Running test(no load)
- Anchoring test
4) Mooring winch
- Running test(no load)
1.2 Hatch cover and door
1) Cargo hatch cover
- Final inspection
- Hose test (*1) (*2)
- Operation test
2) Watertight hatch and door
- Hose test (*1)
3) Weather-tight hatch and door
- Hose test (*1) or chalk test
1.3 Side scuttle and window
- Hose test (*1) or chalk test
1.4 Cargo gear and lifting appliance
1) Crane and davit
- Fitting material test
- Operation and load test
2) Small davit
- Operation test
In Shop On-Board
C O R C O R
Remarks
O
O
*O
O
O
O
O
O
O
O
O
O
*O
O
O
O
O
O
O
* In scope of Rule
requirements.
During sea trial.
O
O
O
O
O
O
O
O
O
O
Operation test is to be
carried out at dock or
quay stage.
*1) : Detail is referred
to part Ⅲ, para.III.4
*2) : Except for Non-
tight Hatch Cover
Position 1 only
Position 1 only
* Register of lifting
appliance/Cargo
handling gear cert. ;
Builder or Class. cert.
shall be issued acc.
to the contract spec.
Operation test and/or
load test is to be carried
out under quay mooring
condition of the vessel
*O
O
O
*O
O
O
O
Less than 1.0 ton
(S.W.L)
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
99
(DSME_DSQS_2016)
1. Hull outfitting part
1.5 Life saving, fire fighting
equipment and fire protection
1) Boat davit and winch
In Shop On-Board
C O R C O R
- Operation and load test
O
O
O
O
O
O
Remarks
SOLAS item
2) Life and rescue boat
- Running test
- Launching test
3) Safety equipment
- Confirmation inspection
4) Fire fighting system
- Confirmation inspection
5) Fire damper
- Operation test
6) A-60 insulation and draft stop
- Installation inspection
1.6 Accommodation space
Galley and laundry equipment
- Operation test
1.7 Air conditioning system
- Volume check in cabin
- Cooling or heating test
1.8 Inert gas generating system
- Safety device function test
- Blower capacity test
- Shop test
1.9 Accommodation ladder
- Proof load test
- Operation test
O
O
O
O
*O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
*O
O
O
O
O
O
O
*O
O
O
O
O
O
O
* If crew accom. cert.
is required from
Class. Society.
During sea trial.
* In scope of rule
requirement
* Combining test
with pilot ladder.
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
100
(DSME_DSQS_2016)
In Shop On-Board
C O R C O R
Remarks
1. Hull outfitting part
1.10 Oil discharge monitoring system
- Function test
- Flow meter calibration
1.11 Cargo turbine/pump and water
ballast pump
- Shaft alignment check
- Safety device test
- Capacity check
- Shop test
1.12 Stripping pump
- Operation test
1.13 Crude oil washing system
- Operation test
1.14 Thruster
- Shop test
- Seal leak test
- Blade gap check
- Shaft alignment check
- Operation test
O
O
O
O
O
O
1.15 GAS carrier
1) Cargo pump,
spray/stripping pump & emer'cy
cargo pump
- Manufacturing &
performance test
- Safety device test(alarm & trip)
- Running test
- Rotation confirmation
- Confirm condition of foot valve
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
During sea trial.
Cargo pump only.
O
O
During sea trial.
O
O
O
O
O
O
O
O
O
O
O
O
During gas trial.
Cargo pump only
Emergency cargo
pump only
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
101
(DSME_DSQS_2016)
1. Hull outfitting part
In Shop On-Board
C O R C O R
Remarks
2) Cargo compressor(L.D & H.D)
- Manufacturing/performance test
O
O
O
- Shaft alignment
- Safety device test(alarm & trip)
- Running test
3) Vaporizer & forcing vaporizer
- Manufacturing insp.
O
O
O
O
O
O
O
O
O
O
O
O
- Function test
O
O
O
During gas trial.
During gas trial.
4) Gas heaters(LD & HD)
- Manufacturing insp.
O
O
- Function test
O
O
O
During gas trial.
5) Reliquefaction plant(If installed)
- Manufacturing/performance test
O
O
O
- Shaft alignment
- Safety device test(alarm & trip)
- Running test
O
O
O
O
O
O
O
O
O
During gas trial.
6) Inert gas generator
- Manufacturing inspection
O
O
O
- Safety device test(alarm & trip)
- Running test
7) Nitrogen generator
- Manufacturing inspection
O
O
O
- Safety device test(alarm & trip)
- Running test
8) Cargo safety valve for cargo tanks
and insulation spaces
- Vacuum test
- Pressure test
O
O
O
O
O
O
O
O
O
O
O
O
During gas trial.
O
O
O
O
O
O
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
102
(DSME_DSQS_2016)
1. Hull outfitting part
9) Vacuum pumps
- Manufacturing/performance test
O
- Shaft alignment
- Safety device test(alarm & trip)
- Running test
10) Gas detection system
- Function test(alarm & trip)
11) Custody transfer system
- Function test
(pressure, temperature, level)
In Shop On-Board
C O R C O R
O
O
O
O
O
O
O
O
O
O
O
O O O O O O
Remarks
12) Water detection system
- Function test of water detector
O
O
O
13) STL equipment
- Manufacturing
- Operation test
- Dummy buoy test
14) GCU equipment
O
O
O
O
O
O
O
- Manufacturing insp.
O
O
O
- Safety & Operation test
15) Cold test
16) Gas trial
17) High pressure BOG compressor
- Mechanical running test
- Overhaul inspection
O O O
O O O
O
O
O O O
O O O
- Safety device test
- Operation test
- Painting confirmation
18) High pressure Pump & Vaporizer
O O O
O O O
- Performance test
O O O O O O
- Safety device test
O O O
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
103
(DSME_DSQS_2016)
1. Hull outfitting part
In Shop On-Board
C O R C O R
Remarks
1.16 Others
1) Tank level gauge / Cargo
monitoring system
- Function test
2) Draft gauge
- Function test
3) Loading computer
- Function test
4) Valve remote control system
- Operation test
O
O
O
O
O
O
O
O
O
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
104
(DSME_DSQS_2016)
In Shop On-Board
C O R C O R
Remarks
2. Machinery part
2.1 M/E shaft and propeller
1) Intermediate/propeller shaft
- Final inspection
2) Coupling bolts/holes
- Dimension check
- Fitting inspection
3) Propeller shaft with propeller
O
O
O
O
- Contact inspection
O
O
O
4) Stern boss/rudder horn casting
- Final inspection
5) Shaft center line sighting
- Measurement inspection
6) Stern tube bush
- Fitting inspection
- Clearance check
7) Propeller
O
O
- Final inspection
O O O
- Fitting inspection
8) Propeller shaft
- Wear down check
9) Stern tube seal
- Leak test
10) Shafting
- Alignment check
- Bearing reaction force check
2.2 Rudder
1) Stock
- Final inspection
- Fitting inspection
- Reamer bolt fitting
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Taper type
Flange type
O
O
O
O
O
O
2) Stock & Rudder contact test
O O O
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
105
(DSME_DSQS_2016)
Remarks
Between stock and
tiller.
*In case of full spade
rudder.
O
O
O
O
O
O
O
2. Machinery part
3) Tiller
In Shop On-Board
C O R C O R
- Contact inspection
O
O
O
- Fitting inspection
4) Rudder horn bush
- Fitting inspection
5) Rudder pintle
- Final inspection
- Contact test
- Fitting inspection
6) Rudder carrier/housing
- Final inspection
7) Rudder
- Fabrication and air test
- VCI powder injection inspection
(*VCI : Volatile Corrosion Inhibitor)
- Alignment inspection
- Swing test
8) Rudder jumping stopper
- Clearance check
2.3 Main engine (Diesel/Turbine)
1) Major components
- Final inspection
2) Shop test
*O
O
O
O
*O
O
O
O
O
O
O
O
3) Chock fast/liner
- Installation condition check
4) Holding down bolts
- Tightening inspection
5) Crankshaft/shaft alignment
- Deflection check
O
O
O
O
O
O
O
O O O
O
O
O
O
O
O
O
O
O
O
* In scope of rule
requirement
Before covering plate
Stock and pintle
After sea trial
O
O
O
O
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
106
(DSME_DSQS_2016)
2. Machinery part
6) Safety device
- Function test
In Shop On-Board
C O R C O R
O
O
O
O
O
O
Remarks
7) Mooring trial
O O O
8) Overhaul inspection
O O
O O
2.4 Reduction gear
- Manufacturing insp.
- Gear tooth contact
- Safety device
- Running test
2.5 Steering gear
- Hydraulic pipe/actuator hyd. test
- Safety valve setting
- Running test(no load)
- Alignment inspection
- Operation test
2.6 Aux. Boiler
- Hyd. test
- Safety device test
- Safety valve popping test
2.7 Economizer
- Hyd. test
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
- Safety valve popping test
O
O
O
2.8 Electric generator engine
1) Diesel generator engine
- Shop test
- Overhaul inspection
- Crankshaft deflection check
- Safety device test
- Con-rod bolt tightening confirmation
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
For each wheel
and pinion.
During sea trial.
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
107
(DSME_DSQS_2016)
In Shop On-Board
C O R C O R
Remarks
2. Machinery part
2) Turbine for turbo generator
- Shop test
- Safety device test
- Overhaul inspection
2.9 Em'cy generator engine
- Shop test
- Safety device test
2.10 Air compressor and air reservoir
1) Air compressor
- Safety device test
- Air charging test
2) Air reservoir
- Hyd. test
- Safety valve popping test
2.11 Heat exchanger
- Hyd. test
2.12 Air cond. and provision
refrigerating plant
- System vacuum test
- Control device test
- Running test
2.13 Incinerator
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
- Operation and safety device test
*O
O
O
O
O
O
2.14 Oily water separator
- Operation test
2.15 Oil purifier
- Operation test
O
O
O
O
O
* Type approved
certificates
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
108
(DSME_DSQS_2016)
2. Machinery part
2.16 Overhead crane
- Shop test
- Operation and load test
2.17 Sewage treatment plant
- Operation test
2.18 Bilge suction test
2.19 Quick closing valve for oil tank
- Operation test
2.20 Power pack for hyd. oil system
- Safety device test
2.21 Elevator(personnel lift)
- Operation and load test
- Safety device test
2.22 Workshop machinery
- Operation test
2.23 Shipside valve
- Operation test
2.24 Marine growth prevent system
- Function test
In Shop On-Board
C O R C O R
*O
O
O
*O
O
O
O
O
O
Remarks
* Register of lifting
appliance/Cargo
handling gear cert. ;
Builder or Class. cert.
shall be issued acc.
to the contract spec.
O O
E/R and cargo hold
O
O
O
O
*O
O
*O
O
O
O
* In scope of rule/
regulation require-
ments
O
O
O
O
Only for power
system
O
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
109
(DSME_DSQS_2016)
In Shop On-Board
C O R C O R
Remarks
3. Piping part
3.1 Pipe pieces
- Class Ⅰ,Ⅱ fabrication insp.
3.2 Steam line
- Hydro test
3.3 Compressed air line
- Installation and hydro test
3.4 Hydraulic oil line
- Installation and hydro test
3.5 Fuel oil line
- Installation and hydro test
3.6 Heating coil in tanks
- Installation and hydro test
3.7 Fire line
- Installation and hydro test
3.8 Bilge line
- Installation and hydro test
3.9 CO2 fire extinguish line
- Hydro test
O
- Installation and leakage test
3.10 Ballast line
- Installation and leak test
3.11 Cargo, stripping, crude oil
washing line
- Installation and hydro test
O
O
O
O
O
O
O
O
O
O
O
O
O
O
*O
O
O
O
O
O
O
In scope of rule
requirements.
In-process inspection.
* DNV only.
For manifold.
For manifold.
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
110
(DSME_DSQS_2016)
3. Piping part
3.12 Sanitary, scupper line
- Flooding test
3.13 L.O, D.O transfer line
- Hydro or leak test
3.14 OX/AC line
- Installation and leak test
3.15 Boiler feed water line
- Installation and hydro test
3.16 L.O line for main engine
- Flushing insp.
3.17 Hydraulic oil line
- Flushing insp.
3.18 Piping for GAS carrier
1) Cargo liquid/stripping/spray sys.
- Fit-up insp.
- Pressure/ leakage test
O
O
- Cleaning insp.(camera test)
2) Vapor gas system
- Fit-up insp.
- Pressure/leakage test
- Cleaning insp.(camera test)
O
O
In Shop On-Board
C O R C O R
Remarks
* Load line require-
ment is to be
confirmed.
Main deck only.
For deck machinery,
hatch cover and
Ro-Ro equipment.
Leakage test is to be
carried out at the
shop or P.E stage.
O
O
O
*O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Leakage test is to be
carried out at the
shop or P.E stage.
O
O
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
111
(DSME_DSQS_2016)
3. Piping part
3) Venting system for cargo tank
and vent heater
- Fit-up insp.
4) Fuel gas system
- Fit-up insp.
- Pressure/leakage test
5) N2 purge system
- Fit-up insp.
- Leakage test
6) Main steam line
- Fit-up insp.
- Post weld heat treatment
- Hyd. test
- Blow-out test
7) Cargo handling sys. (press. parts)
- Fit-up insp.
- Leakage test
- Air blowing test
8) Inert gas sys. (press. parts)
- Fit-up insp.
- Leakage test
- Air blowing test
9) Cargo hold drainage sys.
- Fit-up insp.
- Leakage test
10) Cargo sea water cooling sys.
- Fit-up insp.
- Leakage test
11) Nitrogen sys.
- Fit-up insp.
- Leakage test
- Air blowing test
12) Cargo steam sys.
- Fit-up insp.
- Hyd. test
In Shop On-Board
C O R C O R
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Remarks
For steam ship
For LPGC
(No. 7~12 items)
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
112
(DSME_DSQS_2016)
4. Electric part
4.1 Main generator
- Shop test
- Insulation resistance test
- Parallel operation test
- Governor test
- Full load test
- Load characteristic test
4.2 Main switchboard
- Fabrication and shop test
- Auto. control device test
- Over current trip test
- Reverse power trip test
- Preferential trip test
- Under voltage trip test
- Frequency high/low test
- Voltage high/low test
- Black out test
- Interlock device test
- Power management system test
4.3 Shaft generator
- Shop test
- Safety device test
- M/E holding R.P.M check
- Parallel operation test
- Frequency converter device test
4.4 Emergency generator
- Shop test
- Insulation resistance test
- Governor test
- Load & load characteristic test
4.5 Emergency switch board
- Fabrication & shop test
- Over current trip test
- Under voltage trip test
In Shop On-Board
C O R C O R
Remarks
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
113
(DSME_DSQS_2016)
In Shop On-Board
C O R C O R
Remarks
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
4. Electric part
4.6 Thruster
- Safety device test
- Pitch control test
4.7 Battery & battery charging device
- Operation test
4.8 Motor and control gear
1) Emergency stop of motor/fan
- Operation test
2) Sequential starting for maneuvering
- Operation test
3) Automatic change over for maneuvering
- Operation test
4) Blocking of heavy consumer starting
- Operation test
5) Steering gear alarm system
- Operation test
4.9 Insulation resistance for power circuit
- Measurement test
4.10 Lighting equipment
1) Navigation and signal light
- Function test
2) Emergency light
- Function test
3) Day signal light
- Function test
O
O
O
O
O
O
O
O
O
10% random insp.
of total items.
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
114
(DSME_DSQS_2016)
4. Electric part
4.11 Communication equipment
and alarm system
1) Auto. telephone
- Function test
2) Sound powered telephone
- Function test
3) Public address system
- Function test
4) Engine order telegraph
- Function test
5) Rudder angle indicator
- Function test
6) Engineer/officer call system
- Function test
7) Communal aerial system
- Function test
8) Extension alarm
- Function test
9) Fire/general alarm
- Function test
10) CO2 alarm
- Function test
4.12 Navigation and searching
equipment
1) Whistle
- Function test
2) Magnetic compass
- Function test
In Shop On-Board
C O R C O R
Remarks
During mooring trial
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
.
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
115
(DSME_DSQS_2016)
4. Electric part
3) Gyro compass and autopilot
- Function test
4) Echo sounder
- Function test
5) Speed log
- Function test
6) Radar
- Function test
7) Positioning navigator
- Function test
4.13 Radio equipment
1) Radio plant
- Function test
2) V.H.F telephone
- Function test
3) Satellite communication system
- Function test
4.14 Engine room alarm and
monitoring system
- Function test
4.15 E.C.R & bridge console with
alarm monitoring system
In Shop On-Board
C O R C O R
Remarks
O
O
O
O
O
*O
O
*O
O
*O
O
O
O
* On behalf of
government
administration.
* On behalf of
government
administration.
* On behalf of
government
administration.
- Function test
O
O
O
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
116
(DSME_DSQS_2016)
In Shop On-Board
C O R C O R
O
O
O
Remarks
5.Remote control/automation part
5.1 Main propulsion plant and its
essential auxiliaries
- Function test
5.2 Integrated automation system(I.A.S)
- Function test
5.3 Main propulsion system
- Endurance test
5.4 E/R sys. automation system
(E.O/U.M.S/ACCU/AUT)
- Function test
5.5 Ship speed test
- Progressive speed trial
5.6 Maneuvering test
1) Turning circle test
2) Stopping inertia test
3) Z maneuvering test
4) Crash stop, ahead/astern test
5) Bridge maneuvering test
O
O
O
If equipped.
O
O
O
During sea trial.
O
O
O
During sea trial.
O
O
During sea trial.
During sea trial.
O O
O O
O O
O O O
O O O
5.7 Dynamic positioning system.
O O
O O O
Ⅲ. QUALITY STANDARDS
1. MAIN MACHINERY
1.1 Main engine & shafting
I t e m
1) Crankshaft deflection
2) Centering
(1) Diameter of piano wire : d
(2) Tension of piano wire : T
(3) Deviation of rudder center from shaft
center line
[ Transverse direction(port – stb’d) ]
Deadweight : Over 100,000 tons
Deadweight : Below 100,000 tons
3) Installation
- Contact ratio of chock liner
- Clearance between liner and base
1.2 Rudder
I t e m
Center of gudgeon (stern frame)
Alignment (after bush fitting)
(DSME_DSQS_2016)
117
Tolerance
Limits
( Unit : mm )
Remarks
Note
Maker’s
recommend-
dation should be
followed.
d= 0.5~0.7mm
T= 10~20kg
a≤8
a≤6
≥70％
≤0.04
(Looking FWD)
Clearance within
10mm depth can
be allowed.
( Unit : mm )
Tolerance
Limits
Remarks
d≤0.5
d
ShaftLcRUDDERPropelleraLc
Gudgeon centerRudder carrier centerDeck plateRudder carrierUpper gudgeonLower gudgeond
Ⅲ. QUALITY STANDARDS
1.3 Steering gear
I t e m
1) Installation
- Contact ratio of chock liner
- Clearance between liner and base
(DSME_DSQS_2016)
118
( Unit : mm )
Tolerance
Limits
Remarks
≥70％
≤0.04
Clearance
within
10mm
depth can
be allowed.
2) Alignment
│d1│≤2
│H1-H2│≤0.15
Straight edgeL+d1L+d1L+d1L+d1H2H1H1H2
Ⅲ. QUALITY STANDARDS
2. AUXILIARY MACHINERY
2.1 E/R aux. machinery
I t e m
(DSME_DSQS_2016)
119
( Unit : mm )
Tolerance
Limits
Remarks
Installation of aux. machinery shall be carried out
in accordance with the following three grades.
1) Classification of machinery
(1) Grade “A” : Diesel generator, Turbo generator,
Plumber blocks.
- Tightness of the chock liner shall be checked
by hammering after tightening the holding
down bolts and confirming that a feeler gauge
of 4/100 mm thickness should not insert more
than 10mm.
(2) Grade “B” : Fresh water pump,
Fresh water cooling pump,
Bilge pump,
Main engine sea water cooling p/p,
Fire pump, Fuel oil transfer p/p,
Ballast pump,
Aux. boiler, Lub. oil pump,
Bilge & general service pump,
Emergency diesel generator,
Air compressor, Cargo pump.
- Tightness of holding down bolts shall be
checked by hammering after installation
completed (shop and onboard).
(3) Grade “C” : Other machinery which are not
listed on “grade A” and “grade B”.
- Tightness of holding down bolts shall be
checked by hammering after installation
completed (shop and onboard).
2) Installation
(1) Clearance between liner and base
Grade “A”
Grade “B”
Grade “C”
≤0.04
-
-
Grade B & C ;
Machinery level
can be adjusted
with shim plate.
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
120
( 2.1 E/R aux. machinery )
( Unit : mm )
I t e m
3) Alignment(solid type)
Grade “B” only
Tolerance
Limits
Remarks
a - d
Sag :
2
Gap : b - c
※Where not defined from the maker.
Below
(inclusive)
37 Kw
Over
37 Kw
2.2 Diesel generator
Sag
Gap
Sag
Gap
Crankshaft deflection
Cold condition
Hot condition
≤0.05
≤0.10
≤0.08
≤0.18
Follow to maker’s
recommendation.
1
≤
10000
x stroke(mm) Follow to maker’s
recommendation.
2
≤
10000
x stroke(mm)
bacd
d
Ⅲ. QUALITY STANDARDS
2.3 Deck machinery
I t e m
(DSME_DSQS_2016)
121
( Unit : mm )
Remarks
Tolerance
Limits
Installation of aux. machinery shall be
carried out in accordance with the
following three grades.
1) Classification of machinery
(1) Grade “A” : GAS Carrier Cargo pump
- Tightness of chock liner shall be
checked by hammering after
tightening the holding down bolts
and confirming that a feeler gauge
of 4/100 mm thickness should not
insert more than 10mm.
(2) Grade “B” : Windlass
Mooring winch
Cargo winch
- Tightness of holding down bolts shall
be checked by hammering after
installation completed.
(3) Grade “C” : Other machinery which
are not listed on “Grade A”
and “Grade B”.
- Tightness of holding down bolts shall
be checked by hammering after
installation completed.
2) Installation
Clearance between liner and base
Grade “A”
Grade “B”
Grade “C”
≤0.04
-
-
Grade B & C ;
Machinery level
can be adjusted
with shim plate.
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
122
2.4 Travel type deck crane
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
(1) Distance between centers of rails
(Common type)
(2) Distance between centers of rails
(Gantry type)
(3) Straightness (longitudinal) of rail
d1±5
(per 10m)
d2±10
(per 10m)
d3≤5
(per 10m)
d1d1
d2
d3d3d3A - A'A A'10M
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
123
( 2.4 Travel type deck crane )
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
(4) Straightness (level of rail top surface)
(5) Difference of height between port
and stb’d.
To be measured at each 5 meters.
3. PIPING
3.1 Grade of pipe
d4≤5
(per 10m)
d5≤8
The grade specified by each Classification society shall be divided as follows;
(1) LR P(Kg/cm2), T(oC)
Grade
Service
Class 1
Class 2
Class 3
P
T
P
T
P
T
Steam
P＞16.3 or T＞300 7.1＜P≤16.3 or 170＜T≤300 P≤ 7.1 T≤170
Flammable Liquids
(See note)
P＞16.3 or T＞150 7.1＜P≤16.3 or 60＜T≤150 P≤ 7.1 T≤ 60
Other media, Cargo oil P＞40.8 or T＞300 16.3＜P≤40.8 or 200＜T≤300 P≤16.3 T≤200
NOTE : Flammable liquids include ; Fuel oil, Lubricating oil, Thermal oil
and hydraulic oil.
d410md4
d5
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
124
(3.1 Grade of pipe)
(2) ABS P(㎏f/㎠), T(℃)
Service
Steam and
Thermal Oil
Class Ⅰ
Class Ⅱ
Class Ⅲ
P
T
P
T
P
T
16.3≥ P＞7.1
300≥ T
P＞16.3 or T＞300
or
P≤ 7.1 T≤ 170
16.3≥ P
300≥ T＞170
16.3≥ P＞7.1
150≥ T
Fuel Oil
P＞16.3 or T＞150
or
P≤ 7.1
T≤ 60
16.3≥ P
150≥ T＞60
40.8≥ P＞16.3
300≥ T
P＞40.8 or T＞300
or
P≤ 16.3 T≤ 200
40.8≥ P
300≥ T＞200
Other Fluids,
Except Cargo
Oil and Open
Ended Piping
① CLASS Ⅰ
- Toxic or Corrosive Fluids
- Flammable Fluids Heated to above flash point
- Flammable Fluids having flash point below 60℃ other than cargo oil
- Liquefied gases
② CLASS Ⅲ
- Cargo Oil
- Open Ended Piping
(3) KR & NK P(bar), T(℃)
Grade
Service
Group 1
Group 2
Group 3
P
T
P
T
P
T
Steam
Fuel oil
P＞16 or T＞300
7＜P≤16 170＜T≤300 P≤7 T≤170
P＞16 or T＞150
7＜P≤16
60＜T≤150 P≤7 T≤ 60
Water, Lub. oil,
Comp. air, Hyd. oil
P＞40 or T＞300
(only KR)
16＜P≤40
200＜T≤300
(only KR)
P≤16
T≤200
(only KR)
Primary Refrigerant
(Ammonia)
(R12, R22)
All
-
-
-
-
All
Ⅲ. QUALITY STANDARDS
( 3.1 Grade of pipe )
(4) U.S.C.G
Service
Class
P(PSI)
(DSME_DSQS_2016)
125
P(PSI), T(oF)
T(oF)
Ⅰ
Ⅰ – L
Ⅱ
Ⅱ – L
Ⅰ
Ⅰ – L
Ⅱ
Ⅱ – L
Ⅰ
Ⅰ – L
Ⅱ
Ⅱ – L
Ⅰ
Ⅱ
Ⅰ
Ⅰ – L
Ⅱ
Ⅱ – L
Ⅰ
Ⅰ – L
Ⅱ
Ⅱ – L
Ⅰ
Ⅱ
Ⅰ
Ⅱ
Ⅰ
Ⅱ
Ⅰ
Ⅱ
any and 0 and above
any and below 0
See note (3)
See note (3)
above 150 or above 650
above 150 and below 0
150 and below and 0 to 650
150 and below and below 0
above 150 and 0 and above
above 150 and below 0
150 and below and 0 and above
150 and below and below 0
above 225 or above 330
225 and below and 330 and below
above 225 or above 150
above 225 and below 0
225 and below and 0 to 150
225 and below and below 0
above 225 or above 400
above 225 and below 0
225 and below and 0 to 400
225 and below and below 0
above 225 or above 350
225 and below and 350 and below
above 150 or above 150
150 and below and 150 and below
above 225 or above 400
225 and below and 400 and below
above 225 or above 400
225 and below and 400 and below
( continued )
Class B and C
poisons (2)
Gases and
vapors (2)
Liquified flammable
gases (2)
Molten sulphur
Cargo liquids
Grades A through
D (2)
Cargo liquids
Grade E
Water
Fuel(bunker, diesel,
gasoline, etc.)
Lubricating oil
Asphalt
Ⅲ. QUALITY STANDARDS
( 3.1 Grade of pipe )
( (4) U.S.C.G )
Service
Class
P
(DSME_DSQS_2016)
126
P(PSI), T(oF)
T
Heat transfer oil
Hydraulic fluid
Ⅰ
Ⅱ
Ⅰ
Ⅱ
above 225 or above 400
225 and below and 400 and below
above 225 or above 400
225 and below and 400 and below
Flammable or combustible dangerous cargo
: Refer to specific requirements of C.F.R
Other dangerous cargo
: Refer to specific requirement of C.F.R
(1) Where doubt exists as to proper classification, refer to the commandant for
resolution.
(2) For definitions, see 46 C.F.R part 30, 151 and 154.
Note that the category “B” and “C” position is not used in the rules
applying to self-propelled vessels(46 C.F.R part 153).
(3) Not permitted except inside cargo tanks approved for class B and C
position.
(5) D.N.V P(bar), T(oC)
Piping system for
Class Ⅰ *1)
Class Ⅱ *1)
Class Ⅲ *1)
P
T
P
T
P
T
Steam
Fuel oil
Other media
*2), *3)
＞16
＞16
＞40
＞300
＞150
＞300
≤16
≤16
≤40
≤300
≤150
≤300
≤ 7
≤ 7
≤16
≤170
≤ 60
≤200
*1) For ClassⅡ and Ⅲ piping, both specified conditions are to be met
For ClassⅠ piping, one condition only is sufficient.
*2) Air, water, lubricating oil and hydraulic oil.
*3) Cargo oil and open ended pipes(drains, overflows, vents, boilers escape
pipes, etc.) independently of the pressure and temperature, are pertaining
to ClassⅢ.
Ⅲ. QUALITY STANDARDS
( 3.1 Grade of pipe )
(6) G.L
(DSME_DSQS_2016)
127
M e d i u m / t yp e of p ip e l i n e
Design pressure : PR(bar)
Design temperature : t(℃)
ClassⅠ Class Ⅱ Class Ⅲ
Toxic and corrosic media
Inflammable media with service temperature
above the flash point
Inflammable media with a flash point below 60℃
Liquefied gases(LG)
all
*1)
-
Steam, thermal oil
Air, gas
Lubricating oil, Hydraulic oil
Boiler feed water, condensate
Sea water and fresh water for cooling
Brine in refrigerating plant
Liquid fuels
Cargo pipelines for oil tankers
Open-ended pipelines(without shutoff), e.g.
drains, venting pipes, overflow lines and
boiler blow down lines
Refrigerants
Cargo and venting lines for gas and
chemical tankers
PR＞16
PR≤ 16
PR≤ 7
or
and
and
t＞300
t≤ 300
t≤ 170
PR＞40
PR≤ 40
PR≤ 16
or
and
and
t＞300
t≤ 300
t≤ 200
PR＞16
PR≤ 16
PR≤ 7
or
t＞150
and
t≤ 150
and
t≤ 60
-
-
-
all
-
-
all
-
all
all
-
-
*1) Classification in Pipe Class Ⅱ is possible if used for special safety
arrangements and arranged for structural safety precautions.
Ⅲ. QUALITY STANDARDS
3.2 Pipe fabrication
I t e m
1) Dimension
(1) Straight pipe
(2) Bent pipe
(3) Branch pipe
(4) Penetration piece
(DSME_DSQS_2016)
128
Tolerance
Limits
( Unit : mm )
Remarks
d =±2
d =±2
dθ =±0.5o
│θ1-θ2│≤2o
d =±2
dθ =±0.5o
d =±2
dθ =±0.5o
d =±2
dθ =±0.5o
ℓ + d
ℓ + dℓ + dℓ + dℓ + dθ2θ1θ + dθ(Two dimensional bending)
ℓ + dθ + dθℓ + dℓ + dθ + dθℓ + d(Three dimensional bending)
ℓ + dθ + dθℓ + dℓ + d
θ + dθℓ + dℓ + d
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
129
( 3.2 Pipe fabrication )
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
2) Attachment of flange to pipe
(1) Angle of flange to pipe
(2) Distortion of flange face
dθ ≤0.5o
a : max. 1.0
D＜200,
d≤0.5
200≤D≤450,
d≤1.0
D＞450,
d≤1.5
In case of
adjusting pipe,
see PART III 1.5
dθD
a
Dd
Ⅲ. QUALITY STANDARDS
( 3.2 Pipe fabrication )
I t e m
(3) Welding joint for non-ferrous pipe
① Silver brazing of flange
② Brass brazing of flange
③ Silver brazing of pipe
(DSME_DSQS_2016)
130
( Unit : mm )
Tolerance
Limits
Remarks
0.05≤a≤0.13
b≤1.6
For al-brass
heating coil
a≤0.3
0.05≤a≤0.13
For al-brass
heating coil
ab
a
a
Al-brass Pipe
Socket
Silver Ring
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
131
( 3.2 Pipe fabrication )
( Unit : mm )
I t e m
Tolerance Limits
Remarks
3) Pipe bending
(1) Ellipticity(E)
*ClassⅠ, Ⅱ pipe ; E≤ 7%
Class Ⅲ pipe ; E≤10%
Dmax.- Dmin.
* E = 2 x100(%)
Dmax.+ Dmin.
Where : D = Outdia. Of pipe
R = Bending radius
(2)Thickness reduction ratio(T)
t – t1
T = x 100(%)
t
t : Original pipe thickness
t1 : Thickness after bending
D : Outside dia. Of pipe
(3)Rumples and swells
Curvature
radius
T(%)
Steel
Copper
H and C H and C
2D＜R≤3D
3D＜R≤4D
R＞4D
25
20
16
30
25
20
H : Hot bending/High
frequency bending
C : Cold bending
1
Swell : h1≤ x D
100
1
Rumple : h2≤ x D
100
D : Outside dia. Of pipe
h1 : Max. 2.0 mm for
DNV ClassⅠ and Ⅱ
pipes.
AARD
D min.D max.Section A – A
h1h2
Ⅲ. QUALITY STANDARDS
( 3.2 Pipe fabrication )
I t e m
4) Length of branch connection
5) Reducer
< Copper pipe >
6) Penetration piece
(DSME_DSQS_2016)
132
( Unit : mm )
Tolerance
Limits
Remarks
L≥1/2d + T + 2H
d : O.D of main pipe flange
T : Thickness of main pipe
flange
H : Nut thickness
0.1≤a≤0.3
ℓ1orℓ2≥15,
d1≥d2 +10
L2≥50
t2=12, t1≤12
t2=15, t1≤15
t2=20, t1≤20
t2=25, t1≤25
t2=30, t1＞25
D=15A~300A
L1≥40
D=350A~500A
L1≥50
D=550A~
L1≥60
TLd
aa
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
133
( 3.2 Pipe fabrication )
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
7) Sleeve joint
8) Flange joint
9) Socket joint
ℓ≥15
d≥2.0
d2 : max. 2.5
θ＜3°
a≤max.1.5
a≤1.6
X : To be carried
out according
to design
practice
Θ
100
Taper
5.2
dtℓ
θd2
attaxx
a
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
134
( 3.2 Pipe fabrication )
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
10) Welding
(1) Edge preparation
2.8≤t≤26.0
a = 2.0~4.0
b = 1~2
θ= 50~60o
a = 0~2
t≤4.2
θ= 50~60o
a = 2~4
b = 0~2
t ＞4.2
θ= 50~60o
θ1≤30o
a≤1.6
ClassⅠ, Ⅱ
A welding procedure
specification(WPS)
should refer to
details such as
the thickness of
base metal.
(2) Back bead
1) t≤6.4
d2, d3≤1.6
2) 6.4＜t≤12.7
d2, d 3 ≤ 3.2
3) 12.7＜t≤25.4
d2, d 3 ≤4.0
4) t＞25.4
d2, d 3 ≤4.8
5) All thickness
d1≤0.5
θabt
at
θbat
θaθ1
td1d3d2
(DSME_DSQS_2016)
135
( Unit : mm )
Remarks
Tolerance
Limits
d≤0.8 or
12.5% of the
wall thickness
which is smaller.
e : In accordance
with design
practice.
Ⅲ. QUALITY STANDARDS
( 3.2 Pipe fabrication )
I t e m
(3) Undercut
(4) Leg length
dd
eeteet
Ⅲ. QUALITY STANDARDS
3.3 Pipe fitting
I t e m
1) Pipe hole cutting
2) Bolting
Plastic clamp
3) Sliding pad
(DSME_DSQS_2016)
136
( Unit : mm )
Tolerance
Limits
Remarks
d≤D/50
0.1≤a≤3.0
b1: 0~1/2D
b2: 0~1/2D
b3: 0~1/2D
(D: Bolt diameter)
d: Pipe O.D+1
b1,b2,b3 = “0”
Apply to the place
where expansion
is needed;
Cargo oil/ballast
pipe, heating coil
in hull tank
(length over 3m),
inert gas pipe,
etc.
Details of piping
Installation shall be
In accordance with
piping practice.
Sliding pad in Weather Deck shall be
applied to the longitudinal direction
pipe of ND 125A and above
Dd
db3Pipe
Ⅲ. QUALITY STANDARDS
( 3.3 Pipe fitting )
I t e m
4) Dresser
(DSME_DSQS_2016)
137
( Unit : mm )
Tolerance
Limits
Remarks
Θ
100
Taper
d2≤5
d2≤7
For short type
d1 = 40±5
θ≤3o
5.2
1) 400A and above
2) 350A and below
5.2
1) 400A and above
d1= 80±40
d2≤9
2) 350A and below
d1= 70±30
d2≤7
For long type
θ≤3o
Taper
100
Θ
5) E/R pipe coaming
H = 75
for general
6) Support pad gap welding
a(Gap)
Pad
a≤3mm : 1 Pass welding
3＜a≤5mm : Increase welding
throat thickness
5＜a : Insert additional pad
d1d2Stop boltAA
(Max. 3o )θStop boltBottom (DK)UpPipeA - A
HH
Ⅲ. QUALITY STANDARDS
4. SHEET METAL OUTFITTING
4.1 Side rolling type hatch cover
I t e m
(DSME_DSQS_2016)
138
Tolerance
Limits
( Unit : mm )
Remarks
L
W
B
h
4L
±(3+ )
10000
± 6
4L
±(3+ )
10000
± 4
(1) Length (1 hatch)
(2) Length (1 panel)
(3) Breadth
(4) Height of hatch cover
(5) Diagonal difference(1 hatch) │L1 – L2│
≤ 10
(6) Diagonal difference(1 panel) │L3 – L4│
(7) Vertical deflection
(8) Transverse deflection
(9) Deformation of top plate
(10) Height of packing gutter
(11) Height of packing gutter
(12) Breadth of packing gutter
d1
d2
d3
d4
d5
d6
≤ 5
± 4
± 5
≤ 6
± 2
± 2
± 2
hBL2L1L3L4LWd1d2d1d2
d3d4d6d5
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
139
( 4.1 Side rolling type hatch cover )
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
(1) Top plate clearance
d7
± 5
(2) Top plate difference
│d8│
≤ 5
(3) Side & end plate difference
│d9│
≤ 5
(4) Width of packing groove
d10
± 2
(5) Deviation of compression bar centering
d11
≤ 15
(6) Compression of packing
(7) Span(between centering)
(8) Installing height
(9) Installing pitch
(10) Installing pitch
d12
d13
d14
d15
d16
± 5
± 3
± 3
± 4
± 3
d7d11d10d12d8"A""A""B""B"d7d9A - AB - B
d13d14d16d15
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
140
4.2 Pontoon type hatch cover
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
(1) Length(1 hatch)
(2) Breadth
(3) Height of hatch cover
L
B
h
4L
±(3+ )
10000
4L
±(3+ )
10000
± 4
(4) Diagonal difference
│L1 - L2│
≤ 12
(5) Vertical difference
(6) Diagonal difference
(7) Deformation of top plate
(8) Height of packing gutter
(9) Height of packing gutter
(10) Breadth of packing gutter
d1
d2
d3
d4
d5
d6
± 4
± 5
± 6
± 2
± 2
± 2
L2d2d1L1BhL
d4d5d6d3
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
141
( 4.2 Pontoon type hatch cover )
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
(1) Container cone 1level(20ft)
(2) Container cone level(40ft)
(3) Length(container cone 20ft)
(4) Length(container cone 40ft)
(5) Breadth(container cone 20ft)
(6) Breadth(container cone 40ft)
d7
L3
B1
(7) Diagonal difference(20ft)
(8) Diagonal difference(40ft)
│L4 – L5│
± 5
± 5
± 5
± 6
± 2
± 2
≤ 8
≤ 10
(9) Top plate difference
d8
≤ 10
L3L5B1L4
d7
"A""A"
d8"A"– "A"
Hatch BHatch A
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
142
4.3 Folding type hatch cover
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
4L
±(3+ )
10000
± 4
4L
±(3+ )
10000
± 4
(1) Length(1 hatch)
(2) Length(1 panel)
(3) Breadth
(4) Height of hatch cover
L
W
B
h
(5) Diagonal difference(1 hatch) │L1 - L2│
≤ 10
(6) Diagonal difference(1 panel) │L3 - L4│
≤ 5
(7) Vertical deflection
(8) Transverse deflection
(9) Deformation of top plate
(10) Height of packing gutter
(11) Height of packing gutter
(12) Breadth of packing gutter
d1
d2
d3
d4
d5
d6
± 4
± 5
± 6
± 2
± 2
± 2
d2d1LhWd1d2BL3L4L2L1d6d5d4d3
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
143
( 4.3 Folding type hatch cover )
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
d7
│d8│
│d9│
d10
d11
d12
d13
d14
d15
d16
d17
d18
d19
d20
d21
± 5
≤ 4
≤ 4
± 2
± 15
± 5
± 3
± 3
± 2
± 2
± 2
± 2
± 2
± 2
± 2
(1) Top plate clearance
(2) Top plate difference
(3) Side & end plate difference
(4) Width of packing groove
(5) Deviation of compression bar centering
(6) Compression of packing
(7) Span(between centering)
(8) Height of wheel
(9) Distance of wheel & main hinge
(10) Distance of main hinge & inter hinge
(11) Distance of wheel & inter hinge
(12) Gap of main hinge & cylinder pin
(13) Height of main hinge & cylinder pin
(14) Height of main hinge
(15) Height of inter hinge
d11d7d10d12"A""A""B""B"d7A A
B B
d13d14d19d18d20d21d16d15d17d8d9
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
144
4.4 Single pull type hatch cover
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
(1) Length(1 hatch)
(2) Length(1 panel)
(3) Breadth
(4) Height of hatch cover
L
W
B
h
(5) Diagonal difference(1 hatch) │L1 - L2│
(6) Diagonal difference(1 panel) │L3 - L4│
(7) Vertical deflection
(8) Transverse deflection
(9) Deformation of top plate
(10) Height of packing gutter
(11) Height of packing gutter
(12) Breadth of packing gutter
d1
d2
d3
d4
d5
d6
4L
±(3+ )
10000
± 5
4L
±(3+ )
10000
± 4
≤ 8
≤ 6
± 4
± 4
± 6
± 2
± 2
± 2
d1d2d2d1LWBL1L2L4L3hd3d5d6d4
Ⅲ. QUALITY STANDARDS
(DSME_DSQS_2016)
145
( 4.4 Single pull type hatch cover )
( Unit : mm )
I t e m
Tolerance
Limits
Remarks
(1) Top plate clearance
(2) Top plate difference
(3) Side & end plate difference
(4) Width of packing groove
d7
│d8│
│d9│
d10
± 5
≤ 4
≤ 4
± 2
(5) Deviation of compression bar centering
d11
± 15
(6) Compression of packing
(7) Span(between centering)
(8) Installing height
(9) Installing pitch
(10) Installing pitch
(11) Balancing wheel height
(12) Balancing wheel distance
(13) Balancing wheel pitch
d12
d13
d14
d15
d16
d17
d18
d19
± 5
± 3
± 3
± 4
± 4
± 3
± 4
± 4
d7d7d12d11d10d8A A
B B
d9"A""A""B""B"d18d13d14d17d19d16d15
Ⅲ. QUALITY STANDARDS
4.5 Hatch coaming
I t e m
(DSME_DSQS_2016)
146
( Unit : mm )
Tolerance
Limits
Remarks
(1) Length
(2) Breadth
(3) Diagonal
L
B
± 10
± 10
│L1-L2│
≤ 15
(4) Straightness of top plate(side coaming)
(5) Straightness of top plate(end coaming)
(6) Straightness of top plate(partially/m)
(7) Straightness of hatch coaming(partially/m)
(8) Straightness of hatch coaming(all length)
d1
d2
d3
d4
d5
± 5
± 5
± 3
± 3
4L
±(3+ )
10000
4.6 Hose Test Requirements
DNV
ABS, KR, NKK
Class.
2.53
2.1
LR, BV etc.
2.04
Press.(kg/cm2) Nozzle Inside Dia. Nozzle Dist.
Min. 12.5 Ø
Max. 1.5 m
Remarks
d5d5d4BLL1L21Md2d3d11M
PART Ⅳ. PAINTING PART
◇ CO N TE N TS ◇
Ⅰ. MAJOR PROCESSES
1. Painting Process
Ⅱ. CATEGORIES OF INSPECTION
AND TEST ITEMS
1. Painting Part
Page
148
150
Ⅰ. MAJOR PROCESSES
1. PAINTING PROCESS
1.1 General
(DSME_DSQS_2016)
148
(1) Painting work will be carried out basically according to the Builder's standard
of QISSP(Quality and Inspection Standard for Ships Painting) and the paint
manufacturer's recommendation. Painting work is also proceeded according
to the Builder's building schedule for smooth construction progress.
(2) All painting works are inspected in accordance with the painting specifications,
drawings and QISSP.
1.2 Surface Preparation
Details of de-rusting standard and surface cleaning standard are to be referred
to in QISSP chapter 1 "Quality & Insp. Standard for Surface Preparation".
1.3 Repair Priming at Assembly Shops
Burn damaged parts of shop primer by welding are to be mechanically
cleaned to QISSP DPt 2∼3(equivalent to ISO 8501-1 St 2∼3) and
immediately primed with Builder’s standard touch-up primer to prevent rusting
before secondary surface preparation where exposed to weather.
1.4 Hull Block Painting
(1) After finishing the hull block construction works, coating is to be applied. If the
surface cleaning work of the block is partially proceeded and not completed
on the whole block for some reason, the coating could be applied to the
cleaned surface only before it becomes rusting.
(2) Outfitting works on the hull block are to be carried out before or after painting
works according to the construction schedule.
Ⅰ. MAJOR PROCESSES
(DSME_DSQS_2016)
149
1.5 Correction of Trivial Defects
(1) Trivial defects or damages which are not detected at block inspection but
found after surface preparation (sand blasting, etc.) are to be corrected by
welding, chipping and/or grinding and then touch up with paint.
(2) Paint repair work shall be carried out in accordance with the Builder's practice
and inspection standards.
1.6 Finishing of Free Edges of Steel and Welded Beads
Free edges of steel members cut by gas cutting and irregular welding beads
in heavy corrosive area such as water ballast tanks and fresh water tanks are
to be carefully treated in accordance with the Builder's practice.
1.7 Dry Film Thickness
Measuring method, points and instruments of dry film thickness are referred to
in QISSP chapter 2.1.
1.8 Surface of Final Coat
Surface of final coat is referred to in QISSP chapter 2.2.
1.9 Inspection Items Subject to Attendance of Client's Representative
Inspection items of Client's representative are referred to in QISSP chapter 3.
Ⅱ. CATEGORIES OF INSPECTION AND TEST ITEMS
150
(DSME_DSQS_2016)
1. Painting part
1.1 Painting
- Refer to QISSP Chapter 3.0
In Shop On-Board
C O R C O R
Remarks
DAEWOO SHIPBUILDING QUALITY STANDARD
Published by
DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
QUALITY MANAGEMENT DIVISION/QUALITY PLANNING DEPARTMENT
3370, Geoje-daero, Geoje-si, Gyeongsangnam-do, 53302 Korea
TEL.: (82) 557358007
FAX. : (82) 557351291
ISSUE DATE : October, 2016
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